Find a counterexample to show that the following conjecture is false.

The quotient of any two integers is always less than 1.​

Answers

Answer 1

Answer:

  4/2 = 2 > 1

Step-by-step explanation:

The quotient of any two integers of the same sign and the dividend having the larger magnitude will be greater than 1:

  -88/-11 = 8 > 1

  4/2 = 2 > 1

Hence the conjecture is false.


Related Questions

A random sample of n people selected from a large population will be asked whether they have read a novel in the past year. Let the random variable R represent the number of people from the sample who answer yes. The variance of random variable R is 6. Assume the responses are independent of each other. If the proportion of people from the population who read a novel in the past year is 0.40, which of the following is the best interpretation of random variable R ?

1. A binomial variable with 15 independent trials
2. A binomial variable with 25 independent trials
3. A variable that is not binomial with 25 independent trials
4. A binomial variable with 40 independent trials
5. A variable that is not binomial with 40 independent trials

Answers

Answer:

Option 2) A binomial variable with 25 independent trials                  

Step-by-step explanation:

We are given the following in the question:

Sample size = n

R: the number of people from the sample who answer yes to the question whether they have read a novel in the past year.

[tex]var(R) = 6[/tex]

[tex]p =0.40[/tex]

Then, the random variable R follows a binomial distribution:

There are n independent trials.Each trial have two results either they have read the book or they have not read the bookProbability of success for each trial is same.

[tex]var(R) = npq\\6 = n(0.4)(1-0.4)\\\\n = \dfrac{6}{0.4\times 0.6}\\\\n = 25[/tex]

Thus, R is a binomial variable with 25 independent trials.

Answer:

A binomial variable with 25 independent trials

i need help plz

Choose the word or phrase that best completes each sentence.

1. George Washington when he went to fight the French in the Ohio River Valley.

2. The British then sent a to attack the French Fort Duquesne.

3. The British in the first battle of the French Indian War.

Answers

Answer:

heres your answers

Step-by-step explanation:

George Washington  was defeated  when he went to fight the French in the Ohio River Valley.

The British then sent a trained army to attack the French Fort Duquesne.

The British suffered a defeat in the first battle of the French Indian War.

A manufacture inspects 800 light bulbs and finds that 796 of them have no defects. What is the experimental probability that a light build chosen at random has no defects

Answers

Answer:

The experimental probability that a light build chosen at random has no defects is 99.5 % or P(A)=0.995.

Step-by-step explanation:

let S be the sample space for the inspection of the light bulbs.

Therefore, n(s) = 800

let ' A ' be the event of no defects bulbs.

Therefore, n(A) = 796

Now the Experiment probability for a light bulb chosen has no defects will be given by,

[tex]P(A)=\dfrac{n(A)}{n(S)}[/tex]

Substituting the values we get

[tex]P(A)=\dfrac{796}{800}=0.995[/tex]

The experimental probability that a light build chosen at random has no defects is 99.5 % or P(A)=0.995.

A researcher wants to determine if preschool attendance is associated with high school graduation for low-income students. She randomly assigns low-income children to two groups; one group will attend preschool program, the second group will not attend preschool. The researcher plans to follow the children in the study for 20 years and observe whether or not they graduate from high school. Which of the following is the response variable in this study?
A) Whether or not a subject graduates high school
B) The length of time it takes a subject to graduate high school
C) Whether or not a subject attends preschool
D) The income status of the children

Answers

Answer:

Option A) Whether or not a subject graduates high school      

Step-by-step explanation:

We are given the following experiment in the question:

Experiment:  if preschool attendance is associated with high school graduation for low-income students.

Independent variable: preschool attendance

The children were divided into two groups, one group will attend preschool program, the second group will not attend preschool.

The response variable is another term for dependent variable.

Here,

Dependent variable: whether or not children will graduate from high school.

Because this is dependent on the variable whether the child attends the preschool or not.

Option A) Whether or not a subject graduates high school

Final answer:

The response variable in the study is A) Whether or not a subject graduates high school. This measures the outcome of the treatment, which is preschool attendance for low-income children.

Explanation:

In this study, the response variable is the outcome that the researcher is trying to measure as a result of manipulating the experimental conditions. The experimental condition in this case is whether the child attends preschool or not. Hence, the response variable would be A) Whether or not a subject graduates high school. The preschool attendance (C) is the independent variable or treatment variable, as it is what the researcher manipulates and controls. The variables of the length of time it takes to graduate (B), and the income status of the children (D) are not the focus of the measurement for the direct effect of preschool attendance.

Low-income children have been observed to have various educational disadvantages compared to their wealthier peers, such as lower standardized test scores, lower graduation rates, and higher dropout rates. The study aims to investigate if attending preschool can help bridge the educational achievement gap that starts before children even enter formal schooling. By assigning low-income children randomly to either attend preschool or not, the researcher can control for other variables and focus on the impact of preschool attendance on high school graduation.

An excercise machine with an original price of %850 is on sale at 12% off.
What is the the discount amount?
What is the exercise machine's sale price

Answers

The discount amount of exercise machine is $ 102

The sales price of machine is $ 748

Solution:

Given that,

Original price of machine is $ 850

Discount rate = 12 %

To find: discount amount and sales price of machine

Find the discount amount:

Given that discount rate is 12 % , which means 12 % of original price of machine

Discount amount = 12 % of original price of machine

Discount amount = 12 % of 850

[tex]Discount\ Amount = 12 \% \times 850\\\\Discount\ Amount = \frac{12}{100} \times 850\\\\Discount\ Amount = 0.12 \times 850 = 102[/tex]

Thus the discount amount is $ 102

Find the sales price of machine

Sales price = Original price - Discount amount

[tex]Sales\ Price = 850 - 102\\\\Sales\ Price = 748[/tex]

Thus the sales price of machine is $ 748

A least squares regression line was created to predict the Exam 3 score of STA 2023 students based on their Exam 1 score. The study found that the value of R-squared was 28.8% and the least squares regression line was yhat=50.57+0.4845x. What is the correlation coefficient, r?a. 0.54b. -0.54c. 5.37d. -5.37e. 0.08f. -0.08

Answers

Answer:

a) 0.54

Step-by-step explanation:

The correlation coefficient can be found by taking square root of R-squared value and the sign of correlation coefficient can be assessed by considering the sign of slope value. So,

r²=28.8%=28.8/100=0.288

r=[tex]\sqrt{r^{2} }[/tex]=[tex]\sqrt{0.288}[/tex]=0.5367

By rounding to two decimal places the correlation coefficient

r=0.54

We can see that slope=0.4845 has positive sign so, the correlation coefficient contains the positive sign.

Hence the correlation coefficient r=0.54.

A man flies a kite at a height of 16 ft. The wind is carrying the kite horizontally from the man at a rate of 5 ft./s. How fast must he let out the string when the kite is flying on 34 ft. of string?

Answers

Answer:

4.41 feet per second.

Step-by-step explanation:

Please find the attachment.

We have been given that a man flies a kite at a height of 16 ft. The wind is carrying the kite horizontally from the man at a rate of 5 ft./s. We are asked to find how fast must he let out the string when the kite is flying on 34 ft. of string.

We will use Pythagoras theorem to solve for the length of side x as:

[tex]x^2+16^2=34^2[/tex]

[tex]x^2=34^2-16^2[/tex]

[tex]x^2=900\\\\x=30[/tex]

Now, we will use Pythagorean theorem to relate x and y because we know that the vertical side (16) is always constant.

[tex]x^2+16^2=y^2[/tex]

Let us find derivative of our equation with respect to time (t) using power rule and chain rule as:

[tex]2x\cdot \frac{dx}{dt}+0=2y\cdot \frac{dy}{dt}[/tex]

We have been given that [tex]\frac{dx}{dt}=5[/tex] , [tex]y=34[/tex] and [tex]x=30[/tex].

[tex]2(30)\cdot 5=2(34)\cdot \frac{dy}{dt}[/tex]

[tex]300=68\cdot \frac{dy}{dt}[/tex]

[tex]\frac{dy}{dt}=\frac{300}{68}[/tex]

[tex]\frac{dy}{dt}=4.4117647058823529[/tex]

[tex]\frac{dy}{dt}\approx 4.41[/tex]

Therefore, the man must let out the string at a rate of 4.41 feet per second.

Popcorn is now available in two different cups at a theater; a square pyramid or a cone. They have the same height of 20 cm. The price of each cup is the same. Which cup is the better deal?

Answers

Answer:

Square pyramid cup is better deal then Cone cup.

Step-by-step explanation:

Diagram is missing in the question we have attached diagram for your reference.

Given:

height of square pyramid = 20 cm

height of cone = 20 cm

Base of square pyramid = 12 cm

diameter of cone = 12 cm

radius of cone is half of diameter.

radius of cone = [tex]\frac{diameter}{2}=\frac{12}{2} = 6\ cm[/tex]

We need to find the which cup is the better deal.

Solution:

We will first find the volume of both cups and then we can say the the one which has greater volume is the better deal in buying.

Volume of square pyramid is calculated by one third times square of the base times height.

framing in equation form we get;

Volume of square pyramid  = [tex]\frac{1}{3}\times 12^2\times20= 960\ cm^3[/tex]

Now we know that;

Volume of cone is calculated by one third times square of the radius times height times π.

framing in equation form we get;

Volume of cone = [tex]\frac{1}{3}\pi r^2h= \frac{1}{3}\pi\times 6^2\times 20 \approx 754cm^3[/tex]

Now we can see that;

Volume of square pyramid cup which [tex]960\ cm^3[/tex] is greater than Volume of cone cup [tex]754\ cm^3[/tex]

Hence Amount of popcorn will be more in square pyramid cup then in cone cup.

Hence Square pyramid cup is better deal then Cone cup.

The American Red Cross says that about 45% of the U.S. population has Type O blood, 40% Type A, 11% Type B, and the rest Type AB.
a) One person volunteers to give blood. What is the probability they don't have Type O blood?
b) Among four potential donors (chosen at random), what is the probability that all of them have Type A blood?
c) Among four potential donors (chosen at random), what is the probability that none of them have Type O blood?
d) Among four potential donors (chosen at random), what is the probability that at least one person has Type O blood?

Answers

Answer:

a) The probability is %55

b) The probability is %0.15

c) The probability is %9.15

d) The probability is %91.85

Step-by-step explanation:

a) We need to basically subtract probability of 0 type blood from 1:

P=1-0.45=0.55

b) The probability of one person that is having A blood type is %11. Then probability of four persons that are having A blood type will be:

(0.11)^4=0.00015

c) We need to approach to this question same as B. Probability of having not 0 type of blood is %55. Then probability of four persons that are not having 0 type of blood will be:

(0.55)^4=0.0915

d) To find the probability we can simply subtract probability of four persons that are having 0 type blood from 1:

1-0.0915=0.9185

On Friday 537 people attended a play on Saturdays 812 people attended the same place about how many more people to know the play on Saturday then on Friday how did you estimate

Answers

Answer:

275 people more attended the play on Saturday then on Friday.

Step-by-step explanation:

Given:

number of people attended play on Friday = 537

Number of people attended play on Saturday = 812.

We need to find how many people more attended the play Saturday then on Friday.

Solution:

Now we can say that;

To find Number of people more attended the play on Saturday then on Friday can be calculated by subtracting the number of people attended play on Friday from Number of people attended play on Saturday.

framing in equation form we get;

Number of people more attended = [tex]812-537 = 275[/tex]

Hence 275 people more attended the play on Saturday then on Friday.

Russia's sister gives him two packs of baseball cards per month each pack has 11 card she gave him three extra packs for his birthday how many cards does Richard get in a year

Answers

Answer:

Russia gets 267 baseball cards in a year.

Step-by-step explanation:

Given:

Number of packs given per month = 2

Number of cards in each pack = 11

Number of cards given on his birthday = 3

Now, we know that, there are 12 months in a year.

Using unitary method, the total number of packs given in year and total cards can be calculated. So,

Packs given in 1 month = 2

∴ Packs given in 12 months = 2 × 12 = 24

Number of cards in 1 pack = 11

Number of cards in 24 packs = 11 × 24 = 264

Now, his birthday will come once in a year. So, additional cards received by him will be 3 only. So,

Total number of cards = Number of cards in 24 packs + Additional cards

Total number of cards = 264 + 3 = 267

Therefore, Russia gets 267 baseball cards in a year.

Harry's amount of money is 75% of Kayla's amount of money after harry earned $30 and Kayla earned 25% more of her money harry's amount of money is 80% of Kayla's money how much money did each have at the beginning

Answers

Answer:

Harry had $90 and Kayla had $120 at the beginning.

Step-by-step explanation:

Given:

Initial amount of Harry's money = 75% of Kayla's initial amount.

Harry earned $30 and Kayla earned 25% more.

Harry's final amount = 80% of Kayla's final amount.

Let the initial amount of Kayla be 'x'.

As per question:

Initial amount of Harry's money = 75% of Kayla's initial amount.

Initial amount of Harry's money = 75% of [tex]x[/tex]

Initial amount of Harry's money = [tex]0.75x[/tex]

Now, Harry earned $30 more. So, total amount of Harry is given as:

Final amount of Harry's money = [tex]0.75x+30[/tex]

Kayla also earned 25% more of her money. So, final amount of Kayla's money is given as:

Kayla's final amount = [tex]x+25\%\ of\ x=x+0.25x=1.25x[/tex]

Now, again as per question:

Harry's final amount = 80% of Kayla's final amount.

[tex]0.75x+30=0.80\times 1.25x[/tex]

[tex]0.75x+30=1x[/tex]

[tex]1x-0.75x=30[/tex]

[tex]0.25x=30[/tex]

[tex]x=\frac{30}{0.25}=\$120[/tex]

Therefore, initial money Kayla had = $120

Initial money Harry had = [tex]0.75x=0.75\times 120=\$90[/tex]

Hence, Harry had $90 and Kayla had $120 at the beginning.

Suppose m is a positive integer. Is the set consisting of 0 and all polynomials with coefficients in F and with degree equal to m a subspace ofP(F)?

Answers

Answer:

For this case we don't have any problems for the conditions 1) and 3), but we have a problem with condition 2) since is not satisfied.

We just need to find a counterexample to show that the statement is False. If we find two elements in the subset provided S, and we show that the sum is not in S, then we have the counter example.

Let's say that we have two elements [tex] a^m +1 , -a^m +1 \in S[/tex] so both elements are in S, and if we apply the condition for the addition closed we got:

[tex] (a^m +1) +(-a^m +1) = a^m -a^m +1+1 = 2[/tex]

And by definition of S, 2 is not in S so then since we can't satisfy the closed addition property then S can't be a subsapce

Step-by-step explanation:

For this case the answer would be no.

It can't be a subspace because we not satisfy the condition of closed under addition.

We need to remember that a subset U of V is a subspace of V if and only if U satisfies the following 3 conditions

1) Additive identity [tex] 0 \in U[/tex]

2) Closed under addition [tex] u,v \in U \Rightarrow u+x \in U[/tex]

3) Cloases under scalar multiplication [tex] a \in F, u \in U \Rightarrow au \in U[/tex]

Proof

For this case we don't have any problems for the conditions 1) and 3), but we have a problem with condition 2) since is not satisfied.

We just need to find a counterexample to show that the statement is False. If we find two elements in the subset provided S, and we show that the sum is not in S, then we have the counter example.

Let's say that we have two elements [tex] a^m +1 , -a^m +1 \in S[/tex] so both elements are in S, and if we apply the condition for the addition closed we got:

[tex] (a^m +1) +(-a^m +1) = a^m -a^m +1+1 = 2[/tex]

And by definition of S, 2 is not in S so then since we can't satisfy the closed addition property then S can't be a subsapce

Suppose you buy a car with a value of $8,500. Each year the value of your car will depreciate by 4.7%. How much will your car be worth in 6 years?

A) $11,196.93
B) $6,779.17
C) $7,488.42
D) $6,367.61

Answers

Answer:

D

Step-by-step explanation:

y=a(1-r)^n

a is the initial cost of the vehicle

r is the percentage decrease in decimal

n is the number of years.

so y as the final cost is computed as:

8500(1-0.047)^6

we get $6367.61

Apertures for the diffraction studied in this chapter are __________. A. a single slit.
B. a circle.
C. a square.
D. both A and B.
E. both A and C.

Answers

Answer: the correct option is D

Step-by-step explanation:

Note: the chapter summary can be found in chapter 22 of the Pearson Education,Inc. (PDF format).

In the chapter, a single slit aperture diffraction and a circle aperture diffraction was discussed.

A circle aperture diffraction occurs when light pass through a tiny hole or aperture to produce a circular disc image. This disc is called Airy's disc.

To calculate the aperture diameter,d we can use the formula below;

d= m× λ/ sin θ. ------------------------------------------------------------------------------(1).

The single slit aperture diffraction is when light pass through a single slit to produce. The wavelength, λ is greater than the width of the aperture.

Brittany picked 5 oranges. She shared them equally between her 7 brothers. What fraction of an orange did each brother receive? A. 1/7 B. 7/5 C. 5/7 D. 1/5

Answers

Answer:

C 5/7

Step-by-step explanation:

you have to split the 5 oranges between the 7 brothers, so you would do 5/7

5 split between 7 is the same as 5/7

Answer:5/7

Step-by-step explanation:

If you take each orange and cut them into 7 pieces then you could pass out one piece of each 1/7 of the oranges to each brother. You would do this 5 times until each brother had 5/7 and all the oranges would be passed out to the brothers.

Find the equation for the line that passes through (-1, -2) and (4, 3). Is the
point (3, 1) on this line?

Answers

Answer:

The answer to your question is a) y = x - 1  b) the point is not on the line

Step-by-step explanation:

Data

A ( -1, -2)

B (4, 3)

C ( 3, 1)

Process

1.- Find the slope of the line (m)

Formula

 m = [tex]\frac{y2 - y1}{x2 - x1}[/tex]

Substitution

m = [tex]\frac{3 + 2}{4 + 1} = \frac{5}{5} = 1[/tex]

2.- Find the equation of the line

Formula

    y - y1 = m(x - x1)

Substitution

    y + 2 = 1(x + 1)

Solve for y

   y = x + 1 - 2

   y = x - 1

- Prove that the point (3, 1) is on the line

  1 = 3 - 1

  1 = 2

The point is not on the line because  1 ≠ 2

Peter wants to buy a coat that costs $87 at full price. The coat is now on sale for 40% off. Part A What is the amount in dollars he will save on the coat?

Answers

Answer:

34.8

Step-by-step explanation:

1. Convert percent to decimal

40.00/100=.4

2.Multiply decimal by subtotal

87*.4=34.8

Peter will save $34.80 on the coat.

What is Percentage?

Percentage is a way of expressing a proportion or a fraction as a number out of 100. It is often denoted by the symbol "%".

If the coat is on sale for 40% off, Peter will only need to pay 60% of the original price.

60% of $87 can be calculated as follows:

= 60/100 x $87

= $52.20

Therefore, the amount that Peter will save on the coat is:

= $87 - $52.20

= $34.80

So, Peter will save $34.80 on the coat.

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Nolan has some nickels and some dimes. He has no more than 19 coins worth no less than $1.30 combined. If Nolan has 5 nickels, determine all possible values for the number of dimes that he could have. Your answer should be a comma separated list of values.

Answers

Answer:

Step-by-step explanation:

A nickel is worth 5 cents. Converting to dollars, it becomes

5/100 = $0.05

A dime is worth 10 cents. Converting to dollars, it becomes

10/100 = $0.1

Let x represent the number if nickels.

Let y represent the number of dimes.

He has no more than 19 coins. This means that

x + y ≤ 19

He has no less than $1.30 combined. This means that

0.05x + 0.1y ≥ 1.3

If Nolan has 5 nickels, then, substituting x = 5 into x + y ≤ 19, it becomes

5 + y ≤ 19

y ≤ 19 - 5

y ≤ 14

substituting x = 5 into 0.05x + 0.1y ≥ 1.3, it becomes

0.05 × 5 + 0.1y ≥ 1.3

0.25 + 0.1y ≥ 1.3

0.1y ≥ 1.3 - 0.25

0.1y ≥ 1.05

y ≥ 1.05/0.1

y ≥ 10.5

Therefore, all possible values for the number of dimes that he could have would be

10.5 ≤ y ≤ 14

At the zoo, three adult lions together eat 250 pounds of food a day. If two more adult lions joined the group and ate food at the same rate as the original three, how much food would the zoo need to provide all five lions each day?

Answers

416.67 pounds of food should be given all five lions each day

Solution:

Given that, three adult lions together eat 250 pounds of food a day

Thus, 3 adult lions = 250 pounds of food per day

Two more adult lions joined the group and ate food at the same rate as the original three

Now number of adult lions = 3 adult lions + 2 adult lions = 5 adult lions

Let "x" be the food ate by 5 adult lions

Thus we can say,

3 adult lions = 250 pounds of food per day

5 adult lions = "x" pounds of food per day

This forms a proportion and we can solve the sum by cross multiplying

[tex]\frac{3}{5} = \frac{250}{x}\\\\3 \times x = 250 \times 5\\\\3x = 1250\\\\x = 416.67[/tex]

Thus 416.67 pounds of food should be given all five lions each day

A company produces three combinations of mixed vegetables that sell in​ 1-kg packages. Italian style combines 0.4 kg of​ zucchini, 0.3 kg of​ broccoli, and 0.3 kg of carrots. French style combines 0.5 kg of broccoli and 0.5 kg of carrots. Oriental style combines 0.2 kg of​ zucchini, 0.3 kg of​ broccoli, and 0.5 kg of carrots. The company has a stock of 18 comma 200 kg of​ zucchini, 28 comma 100 kg of​ broccoli, and 38 comma 700 kg of carrots. How many packages of each style should it prepare to use up existing​ supplies?

Answers

Answer:

Italian style = 19,000 packages

French style = 13,000 packages

Oriental style = 53,000 packages

Step-by-step explanation:

let the number of packages of Italian style = x

let the number of packages of French style = y

let the number of packages of Oriental style = z

See the attached table which summarize the problem

Using the table we can get the following system of equations:

0.4x + 0 * y + 0.2z = 18,200

0.3x + 0.5y + 0.3z = 28,100

0.3x + 0.5y + 0.5z = 38,700

Solving the 3 equations together to find x , y and z

Using the calculator

x = 19,000

y = 13,000

z = 53,000

A rectangular painting measures 15 inches by 18 inches and contains a frame of uniform width around the four edges. The perimeter of the rectangle formed by the painting and its frame is 90 inches. Determine the width of the frame.

Answers

Final answer:

To determine the width of the frame, subtract twice the frame width from the length and width of the outer rectangle and set up an equation based on the perimeter.

Explanation:

To determine the width of the frame, we need to first find the dimensions of the inner rectangle formed by the painting. If we subtract twice the frame width from the length and width of the outer rectangle, we get the length and width of the inner rectangle. Let's call the width of the frame 'x'.

The length of the inner rectangle is 15 inches - 2 inches, and the width of the inner rectangle is 18 inches - 2 inches. The perimeter of the inner rectangle is the sum of its four sides, which can be calculated using the

formula P = 2l + 2w. We know that the perimeter of the inner rectangle is 90 inches, so we can set up the equation:

90 = 2(15 - 2x) + 2(18 - 2x)

Solving this equation will give us the value of 'x', which represents the width of the frame.

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A farmer is building a rectangular pen along the side of a barn for animals. The barn will serve as one side of the pen. The farmer has 120 feet of fence to enclose an area of 1512 square feet and wants each side of the pen to be at least 20 feet long.Find the dimensions of the pen. How would I put this into my graphing calculator to solve?

Answers

The dimension of pen is 42 feet by 36 feet

Solution:

Let "x" be the width of pen

Let "y" be the length

Farmer wants each side of the pen to be at least 20 feet long

[tex]x\geq 20[/tex]

The farmer has 120 feet of fence to enclose an area of 1512 square feet

The amount of fencing is equal to the perimeter of fence which is 2 times the width plus only one length since the other side (length) is along the barn

2x + y = 120

Therefore,

y = 120 - 2x

The area of barn is given as 1512 square feet

The area of rectangle is given as:

[tex]Area = length \times width[/tex]

[tex]1512 = x \times y\\\\1512 = x \times (120-2x)\\\\1512 = 120x - 2x^2\\\\2x^2-120x + 1512 = 0[/tex]

Divide the entire equation by 2

[tex]x^2-60x + 756 = 0[/tex]

Factor the left side of equation

[tex]x^2-60x+756 = 0\\\\(x-18)(x-42) = 0[/tex]

Therefore, we get two values of "x"

x = 18 or x = 42

Since, [tex]x\geq 20[/tex]

Therefore, x = 42 is the solution

Thus, width = x = 42 feet

Length = y = 120 - 2x

y = 120 - 2(42)

y = 120 - 84

y = 36

Thus the dimension of pen is 42 feet by 36 feet

The area of a shape is the amount of space it occupies.

The dimension of the pen is 42 by 36 feet.

The perimeter is given as:

[tex]\mathbf{P = 120}[/tex]

Because one of the sides does not need fencing, the perimeter would be:

[tex]\mathbf{P = 2x + y}[/tex]

Make y the subject

[tex]\mathbf{y = P - 2x}[/tex]

Substitute 160 for P

[tex]\mathbf{y = 120 - 2x}[/tex]

The area of a pen is:

[tex]\mathbf{A = xy}[/tex]

Substitute [tex]\mathbf{y = 120 - 2x}[/tex]

[tex]\mathbf{A = x(120 -2x)}[/tex]

Substitute 1512 for Area

[tex]\mathbf{x(120 -2x) = 1512}[/tex]

Open brackets

[tex]\mathbf{120x -2x^2 = 1512}[/tex]

Rewrite as:

[tex]\mathbf{2x^2 -120x + 1512 = 0}[/tex]

Divide through by 2

[tex]\mathbf{x^2 -60x + 756 = 0}[/tex]

Expand

[tex]\mathbf{x^2 -18x - 42x + 756 = 0}[/tex]

Factorize

[tex]\mathbf{(x -18)(x - 42) = 0}[/tex]

Solve for x

[tex]\mathbf{x =18 \ or\ x = 42}[/tex]

The dimension must be at least 20.

So, we have:

[tex]\mathbf{x = 42}[/tex]

Recall that:

[tex]\mathbf{y = 120 - 2x}[/tex]

This gives:

[tex]\mathbf{y = 120 - 2 \times 42}[/tex]

[tex]\mathbf{y = 36}[/tex]

Hence, the dimension of the pen is 42 by 36 feet.

Read more about areas at:

https://brainly.com/question/11957651

Terry's essay has 9 more pages than stacey's essay. If s represents the number of pages in stacey's essay, write an expression for the number of pages in terry's essay

Answers

t = 9 + s is the expression for number of pages in terry's essay

Solution:

Given that, Terry's essay has 9 more pages than stacey's essay

Let "s" be the number of pages in Stacey essay

Let "t" be the number of pages in terry essay

To find: Expression for the number of pages in terry's essay

From given statement,

Terry's essay has 9 more pages than stacey's essay

Which means, number of pages in terry essay is 9 more than number of pages in Stacey essay

Therefore,

Number of pages in terry essay = 9 + number of pages in Stacey essay

[tex]t = 9 + s[/tex]

Thus the expression for number of pages in terry's essay is found

The school that Emily goes to is selling tickets to a fall musical. On the first day of ticket sales the school sold24 adult tickets and 3 student tickets for a total of $223.00. The school took in $152 on the second day by selling 7 adult tickets and 6 student tickets. What is the price each of one adult ticket and one student ticket?

Answers

Answer:

Step-by-step explanation:

Let x represent the price of one adult ticket.

Let y represent the price of one student ticket.

On the first day of ticket sales the school sold 24 adult tickets and 3 student tickets for a total of $223.00. This means that

24x + 3y = 223 - - - - - - - - - - - -1

The school took in $152 on the second day by selling 7 adult tickets and 6 student tickets. This means that

7x + 6y = 152 - - - - - - - - - - - - - -2

Multiplying equation 1 by 6 and equation 2 by 3, it becomes

144x + 18y = 1338

21x + 18y = 456

Subtracting, it becomes

123x = 882

x = 882/123

x = 7.17

Substituting x = 7.17 into equation 2, it becomes

7 × 7.17 + 6y = 152

50.19 + 6y = 152

6y = 152 - 50.19 = 101.81

y = 101.81/6 = 16.97

John drove to Daytona Beach, Florida, in hours. When he returned, there was less traffic, and the trip took only hours. If John averaged mph faster on the return trip, how fast did he drive each way?

Answers

Question: John drove to a distant city in 5 hours.

When he returned, there was less traffic and the trip took only 3 hours.

If John averaged 26 mph faster on the return trip, how fast did he drive each way

Answer:

For the first trip he drove at a speed of 39 mph

For the second trip he drove at a speed of 65 mph

Step-by-step explanation:

Let the distance for both journey be Z because they are equal.

Let the speed for the first journey be X

Let the speed of the second journey be Y

Formula for speed = distance ÷ time

For the first journey the speed X = Z ÷ 5

For the second journey the speed Y = Z ÷ 3

Since John averaged 26 mph faster in the second trip than the first trip due to traffic, it means that the difference in speed between the first & second trip is 26 mph

Difference in speed = (Z÷3) - (Z÷5) = 26

subtracting both results to  (5Z-3Z) ÷ 15 = 26

Upon cross multiplication

2Z = 390

Z = 390÷2 = 195 miles

Therefore speed for first journey = 195 ÷ 5 = 39 mph

Speed for second journey = 195 ÷ 3 = 65 mph

To verify, 65 - 39 = 26 mph

In this problem, y = c₁eˣ + c₂e⁻ˣ is a two-parameter family of solutions of the second-order DE y'' − y = 0. Find a solution of the second-order IV P consisting of this differential equation and the given initial conditions. y(-1) = 4, y'(-1) = -4.

Answers

Answer:

[tex]y=4e^{-(x+1)}[/tex] will be the solutions.

Step-by-step explanation:

The given equation is [tex]y=C_{1}e^{x}+C_{2}e^{-x}[/tex]

Therefore, for x = -1

[tex]4=C_{1}e^{-1}+C_{2}e^{1}[/tex] ------(1)

Now y'(-1) = -4

y'(x) = [tex]C_{1}e^{x}-C_{2}e^{-x}[/tex] = -4

[tex]C_{1}e^{-1}-C_{2}e^{1}[/tex] = -4 -----(2)

By adding equation (1) and (2)

[tex]2C_{1}e^{-1}=0[/tex]

[tex]C_{1}=0[/tex]

From equation (1),

[tex]4=0+C_{2}e^{1}[/tex]

[tex]C_{2}=4e^{-1}[/tex]

By placing the values in the parent equation

y = [tex]4e^{-1}\times e^{-x}[/tex]

y = [tex]4e^{-(x+1)}[/tex]

Need help ASAP!! will mark brainliest for fast response.
(attached screenshot)

Answers

Answer:

hi

Step-by-step explanation:

12 a 2 in box # 1

4-6a for box # 2

2a*2+8a box # 3

12a*2- 8 a box # 4

have a good day hope this helps

Answer:

The answer to your question is  below

Step-by-step explanation:

Remember that the greatest common factor of a set of numbers is the greatest factor common to all the numbers.

              Greatest common factor        Factor           Expression

                           2a²  + 8a                  2a(a + 4)                2a

                          12a² - 8a                 4a(3a - 2)                4a

                            4a + 8                     4(a + 2)                    4

                            4 - 6a                      2(2 - 3a)                  2

For triangle JKL, angle JKL measures 90 degrees, and side JL has a length of 260 centimeters. If side JK > side KL, which of the following could be a combination of the lengths of sides JK and KL50 / 100 / 120 / 200 / 240.

Answers

Answer:

100/240/260 will be the combination.

Step-by-step explanation:

In a right angle triangle JKL,

∠JKL = 90° and side JL is the hypotenuse of the triangle.

By Pythagoras theorem,

JK² + KL² = JL²

Since JL = 260

Therefore, (JK)² + (KL)²= (260)² = 67600

In the given options, square of two numbers total becomes 67600.

And the possible numbers will be 100 and 240.

(100)² + (240)² = 10000 + 57600 = 67600

Since side JK > side KL

Therefore, measure of JK = 240 cm, KL = 100 cm and JL = 240 cm could be the combination among all values.

The full fare is $100, the discounted fare is $70. In the next period (the last one before departure) there will be a request for the discounted fare with probability 0.5, and a full fare request with probability 0.4; probability of no request is 0.1.

Answers

Answer:$78

Step-by-step explanation:

The two events,i.e request for full fare and the request for discounted fare ar mutually exclusive ,i.e if one happens the other cannot and vice versa .

The representation via set diagram will show a disjointed subset while P(AnB)^° is 1- (P(A)+P(B))=0.1.

Where A is the probability of full fare request while B is the probability of discounted request.

Probability (AUB)=P(A)+ P(B)=0.5×100+0.4×70=78.

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