If a lineman can install 12 insulators in 183/4 hours, how many insulators should he be able to install in 281/8 hours?

Answer:

$796

Step-by-step explanation:

We have been given that Marge bought a computer for $699 on the installment plan. The terms of the plan were a down payment of $100, then payments of $58 a month for 12 months.

First of all, we will find the amount paid in 12 months by multiplying $58 by 12 as:

[tex]\text{Amount paid in 12 months}=\$58\times 12[/tex]

[tex]\text{Amount paid in 12 months}=\$696[/tex]

Since Marge paid $100 as down payment, so her total cost would be down payment plus amount paid in 12 months.

[tex]\text{Marge's total cost}=\$100+\$696[/tex]

[tex]\text{Marge's total cost}=\$796[/tex]

Therefore, Marge's total cost was $796.

Answer:

[tex]p_v = P(\chi^2_{4,0.05} >3.81)=0.43233[/tex]

Since the p values is higher than the significance level we FAIL to reject the null hypothesis at 5% of significance, and we can conclude that we don't have significant differences between the 3 remedies analyzed. So we can say that the 3 remedies ar approximately equally effective.

Step-by-step explanation:

A chi-square goodness of fit test "determines if a sample data matches a population".

A chi-square test for independence "compares two variables in a contingency table to see if they are related. In a more general sense, it tests to see whether distributions of categorical variables differ from each another".

Assume the following dataset:

                               NyQuil          Robitussin       Triaminic     Total

No relief                    11                     13                      9               33

Some relief               32                   28                     27              87

Total relief                7                       9                      14               30

Total                         50                    50                    50              150

We need to conduct a chi square test in order to check the following hypothesis:

H0: There is no difference in the three remedies

H1: There is a difference in the three remedies

The level os significance assumed for this case is [tex]\alpha=0.05[/tex]

The statistic to check the hypothesis is given by:

[tex]\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}[/tex]

The table given represent the observed values, we just need to calculate the expected values with the following formula [tex]E_i = \frac{total col * total row}{grand total}[/tex]

And the calculations are given by:

[tex]E_{1} =\frac{50*33}{150}=11[/tex]

[tex]E_{2} =\frac{50*33}{150}=11[/tex]

[tex]E_{3} =\frac{50*33}{150}=11[/tex]

[tex]E_{4} =\frac{50*87}{150}=29[/tex]

[tex]E_{5} =\frac{50*87}{150}=29[/tex]

[tex]E_{6} =\frac{50*87}{150}=29[/tex]

[tex]E_{7} =\frac{50*30}{150}=10[/tex]

[tex]E_{8} =\frac{50*30}{150}=10[/tex]

[tex]E_{9} =\frac{50*30}{150}=10[/tex]

And the expected values are given by:

                               NyQuil          Robitussin       Triaminic     Total

No relief                    11                     11                       11               33

Some relief               29                   29                     29              87

Total relief                10                     10                     10               30

Total                         50                    50                    50              150

And now we can calculate the statistic:

[tex]\chi^2 = \frac{(11-11)^2}{11}+\frac{(13-11)^2}{11}+\frac{(9-11)^2}{11}+\frac{(32-29)^2}{29}+\frac{(28-29)^2}{29}+\frac{(27-29)^2}{29}+\frac{(7-10)^2}{10}+\frac{(9-10)^2}{10}+\frac{(14-10)^2}{10} =3.81[/tex]

Now we can calculate the degrees of freedom for the statistic given by:

[tex]df=(rows-1)(cols-1)=(3-1)(3-1)=4[/tex]

And we can calculate the p value given by:

[tex]p_v = P(\chi^2_{4,0.05} >3.81)=0.43233[/tex]

And we can find the p value using the following excel code:

"=1-CHISQ.DIST(3.81,4,TRUE)"

Since the p values is higher than the significance level we FAIL to reject the null hypothesis at 5% of significance, and we can conclude that we don't have significant differences between the 3 remedies analyzed.

To test the hypothesis that three cough remedies are equally effective, conduct an Analysis of Variance (ANOVA) test and use the p-value, compared to the pre-set level of 0.05, to decide if the null hypothesis should be rejected or failed to reject.

The subject matter pertains to hypothesis testing, a method used in statistics to test the validity of a claim (hypothesis) about a population. In this case, the null hypothesis in your question is that the three cough remedies are equally effective. The alternative hypothesis (Ha) is that at least one of the remedies is different. The P-value, when set at 0.05, helps to decide on the rejection or non-rejection of the null hypothesis, depending on whether it’s greater or smaller than the P-value.

First, we need to perform an Analysis of Variance (ANOVA) test since we have more than two samples to compare. After conducting the test, we compare the P-value with our pre-set alpha (0.05). If the p-value obtained is less than 0.05, we can reject the null hypothesis, letting us conclude that not all cough remedies are equally effective. If, however, the p-value is more than 0.05, we fail to reject the null hypothesis, and hence, we can't confidently say that one cough remedy is more effective than the others.

Remember that failing to reject the null hypothesis does not prove it true, it only suggests that there's not enough evidence against it given our data and chosen significance level.

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Answer:

Step-by-step explanation:

The equation of a straight line can be represented in the slope intercept form as

y = mx + c

Where

m = slope = (change in the value of y in the y axis) / (change in the value of x in the x axis)

The equation of the given line is

y= 4x + 1

Comparing with the slope intercept form, slope = 4

If two lines are parallel, it means that they have the same slope. Therefore, the slope of the line passing through (-2, - 5) is 4

To determine the intercept, we would substitute m = 4, x = - 2 and y = -5 into y = mx + c. It becomes

- 5 = 4 × - 2 + c = - 8 + c

c = - 5 + 8 = 3

The equation becomes

y = 4x + 3

Answer:

Step-by-step explanation:

any eq. of line parallel to y=4x+1 is

y=4x+a

it passes through (-2,-5)

so -5=4(-2)+a

a=-5+8

a=3

reqd. eq. is y=4x+3

==================================

Explanation:

Mark point D as the center of the circle. Segment EG is the diameter, so angle EDG is 180 degrees. By the central angle theorem, arc EFG is also 180 degrees.

The minor arc from E to F (follow the shortest path along the circle) is 56 degrees. From F to G, along the shortest path, we have y degrees.

(minor arc EF)+(minor arc FG) = arc EFG

56+y = 180

56+y-56 = 180-56

y = 180-56

y = 124

Minor arc FG is 124 degrees.

This is equivalent to saying that central angle FDG is 124 degrees.

-----------------

The inscribed angle for minor arc FG is the angle FEG, which is half that of the minor arc measure.

inscribed angle = (1/2)*(arc measure)

angle FEG = (1/2)*(minor arc FG)

x = (1/2)*(124)

x = 62

Good evening ,

Answer:

x = 62°

Step-by-step explanation:

x equals to half the measure of the central angle FOG

x = (1/2)×(m∠FOG)

m∠FOG = 180 - m∠EOF

              = 180 - 56

              = 124

then  x = 124/2 = 62.

:)

Answer:

False. See explanation below.

Step-by-step explanation:

False

A simple random sample "is a subset of a statistical population in which each member of the subset has an equal probability of being chosen"

In other words that means in order to apply a random sampling we need to ensure that we have the same probability of inclusion for every possible element of the population of interest.

And for this case a collection of any numerical information is not referred as random sampling since we don't know if these scores are representative of the population of interest.

And we don't know if this information is obtained using any sampling frame or sampling methodology.  

A linear function can be used to represent the total retail cost of renting a vacuum cleaner: F(x) = 31.50 + 32x.

A linear function can be used to represent the total retail cost of renting a vacuum cleaner. Let's denote the fixed fee as $31.50 and the hourly rate as $32. The linear function F for the total retail cost of a vacuum cleaner can be written as:

F(x) = 31.50 + 32x

Where x represents the number of hours the vacuum cleaner is rented for and F(x) gives the total retail cost.

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The flat fee that the store charges is $14 and the cost for 7 hours is $56

A linear equation is on the form:

y = mx + b

where y, x are variables, m is the rate of change and b is the initial value of y.

let f for the total rental cost of a vacuum cleaner for x hours

Using the points (1, 20) and (3, 32) from the table:

f-f1=(f2-f1)/(x2-x1) (x-x1)

f-20=(32-20)/(3-1) (x-1)

f(x)=6x+14

The flat fee that the store charges is $14

The reasonable domain is 1 ≤ x ≤ 12

The cost for 7 hours is:

f(7) = 6(7) + 14 = 46

here is the complete question-

A hardware store rents vacuum cleaners that customers may use for part or all of a day before returning. The store charges a flat fee plus an hourly rate. Part A Write a linear function f for the totall rental cost of the vacuum cleaner. A. f(x)=6x+14 B. f(x)=3x+14 C, f(x)=3x+22 D. f(x)=6x+24 Part B What is a reasonable domain for the function? A. 14 B. 1 C. 0 D. 20

Answer:

The saving amount on selling of three books together after discount of 20% is $2.69

Step-by-step explanation:

Given as :

The original price of first book = $2.50

The original price of second book = $4.95

The original price of third book = $6.00

The total percentage discount on the book = d = 20%

Let The saving money after purchased of book = $x

And Let the selling price of the book = s.p = $y

Now, According to question

The total market price of three books = m.p = $2.50 + $4.95 + $6.00

I.e m.p = $13.45

Now, from discount formula

Discount % = [tex]\dfrac{market price - selling price}{market price}[/tex]

Or, d% = [tex]\dfrac{m.p - s.p}{m.p}[/tex]

Or, 20% = [tex]\dfrac{13.45 - y}{13.45}[/tex]

Or, [tex]\dfrac{20}{100}[/tex] = [tex]\dfrac{13.45 - y}{13.45}[/tex]

Or, 20 × 13.45 = (13.45 - y) × 100

Or, 269 = 1345 - 100 y

Or, 100 y = 1345 - 269

Or, 100 y = 1076

∴  y = [tex]\dfrac{1076}{100}[/tex]

i.e y = $10.76

So, The selling price of three books = y = $10.76

∴ The saving amount on selling of three books together after discount of 20% = x = Total market price - Selling price

i.e x = m.p - y

or, x = $13.45 - $10.76

or, x = $2.69

Hence ,The saving amount on selling of three books together after discount of 20% is $2.69  Answer

Answer: the number of the parking space covered by the car is 87

Step-by-step explanation:

Numbers are assigned to each parking spot. Looking closely at the numbers assigned to each spot, the numbers are inverted and the number on each successive spot differ by one. The numbers are 86, 87, 88, 89, 90, 91

Therefore, the number assigned to the spot where the car would be 87

Answer:Lucas is faster

Step-by-step explanation:

Distance = speed × time

Time = distance × speed

the path from the bottom to the top of the mountain was 2 miles.

James climbed at an average rate of 3 mph. This means that the time it took James to climb to the top of the mountain would be

2/3 hours

James ran back at 4 mph. This means that the time it took James run back to the bottom of the mountain would be

2/4 = 1/2 hours

Total time that James spent would be

2/3 + 1/2 = 7/6 = 1.7 hours.

Lucas climbed at an average rate of 2 mph. This means that the time it took Lucas to climb to the top of the mountain would be

2/2 = 1 hour

Lucas ran back at 5 mph. This means that the time it took Lucas to run back to the bottom of the mountain would be

2/5 hours

Total time that James spent would be

1 + 2/5 = 1.4hours.

Answer:

James is faster

Step-by-step explanation:

It took 70 minutes for James to finish and 84 minutes for Lucas to finish and James was faster.

Step-by-step explanation:

Keep in mind that Distance = Speed * Time

First lets starts off with James,

Climbing rate of James = 3 mph

Running back rate of James = 4 mph

Total time taken by James =  3/4 x 2/4 = 14/12 = 7/6

Lets convert that into min to make it easier,

7/6 x 60 = 70 min

Now, lets look at lucas,

Climbing rate of Lucas = 2/2 = 1 hour(s) or 60 minutes

Climbing back rate of Lucas = 2/5 of an hour

Now lets convert this one into minutes,

2/5 x 60 = 24 minutes

Total time taken by Lucas = 24 + 60 = 84 minutes

so that means

James = 70 minutes

Lucas = 84 minutes

Therefore James was faster

Hope this helped and please correct me if I got something wrong :)

Answer:

[tex]8\times10^5m^2[/tex]

Step-by-step explanation:

To find the cross-section area at a point below the faucet

we can use following equations

[tex]v_1^2=v_2^2+2ay[/tex]

and equation of continuity

[tex]A_1v_1=A_2v_2[/tex]

v_1= velocity at the out let

v_2=  velocity at the inlet (faucet)= 0.75 m/s

y = distance below the faucet = 0.10 m

A_1= cross-sectional area of the water stream at a point 0.10 m below the faucet.

A_2= area of faucet= 1.9 × 10-4m2

from above two equation we can write

[tex]A_1= \frac{A_2v_2}{\sqrt{v_2^2+2ay} }[/tex]

now putting the values we get

[tex]A_1= \frac{1.9\times10^{-4}\times0.75}{\sqrt{0.75^2+2\times9.80\times0.10} }[/tex]

A_1= 0.00008= [tex]8\times10^5[/tex]

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Work out the area of the square :

6 x 6 = 36

As there are 2, multiply by 2:

36 x 2 = 72

Work out the area of the rectangle:

12 x 6 = 72

As there are 4, multiply by 4:

72 x 4 = 288

Add these values:

288 + 72 = 360

Thus, your answer is E. 360 in^2

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Given the width and length of the rectangle in terms of x, the formula for the perimeter is substituted with these expressions. After simplifying, the perimeter of the rectangle is found to be represented by the equation 8.5x + 3.

The subject represents a problem in mathematics, specifically geometry. The perimeter of a rectangle is calculated by the formula 2(width + length). Given that the width is meant to be represented by (3x - 1.5) and the length is represented by (1.25x + 3), we substitute these expressions into our formula to find the perimeter of the rectangle.

Perimeter = 2[(3x - 1.5) + (1.25x + 3)].

To simplify, the above equation becomes:

Perimeter = 2[4.25x + 1.5],

which then further simplifies to:

Perimeter = 8.5x + 3.

The perimeter of the rectangle is therefore represented by the expression 8.5x + 3.

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Answer:

The number of corn dogs bought is 3.

Step-by-step explanation:

It is given that, cost of soda is $3 and cost of corn dogs is $4 each.

Let the number of soda bought be "x" and corn dogs be "y".

Thus the total amount spent is given by,

[tex]A = 3x + 4y[/tex]

The total amount is less than or equal to $27, which means;

[tex]3x+4y\leq 27[/tex]

The above inequality can be used to find the number of corn dogs bought.

[tex]y\leq \frac{27-3x}{4}[/tex]

Now, number of items bought are greater than zero and integers, thus x and y are greater than zero integers.

Inserting x from 0 to 9, we get only two only 2 answers,

(x,y) = (5,3) and (9,0)

But it is said that number of corn dogs is not zero, some are bought, thus correct solution is (5,3).

Thus the number of corn dogs bought is 3.

Answer:

The Answer is (A)

Step-by-step explanation:

Answer:

Aleatory

Step-by-step explanation:

This is an example of Aleatory type of insurance contact.

Definition:

A contract preoccupied with an unclear occurrence that delivers for imbalanced transfer of worth between the parties. Insurance plans are discretionary investments and, after sustaining a reported loss, a person must pay premiums for many years. Most insurance policies are aleatory contacts.

Answer:0.277

Step-by-step explanation:

Given there are three boxes i.e. A , B and C

Probability of selecting any box is [tex]P_1=\frac{1}{3}[/tex]

Box A contains 2 keys out of which is 1 is correct so Probability of selecting the right key is [tex]P_2=\frac{1}{2}[/tex]

Box B contains 3 keys out of which is 1 is correct so Probability of selecting the right key is [tex]P_3=\frac{1}{3}[/tex]

Box C contains 2 keys out of which is 1 is correct but we cannot use it so Probability of selecting the right key is [tex]P_4=0[/tex]

Probability of selecting the right key is [tex]P=P_1\times P_2+P_1\times P_2+P_1\times P_3[/tex]

[tex]P=\frac{1}{3}\times \frac{1}{2}+\frac{1}{3}\times \frac{1}{3}+\frac{1}{3}\times 0[/tex]

[tex]P=\frac{5}{18}[/tex]

[tex]P=0.277[/tex]

On 12th day Rosita will walk all three dogs

Solution:

Given that Rosita earns money by walking dogs after school and on weekends

She walks Madeline every other day,buddy every fourth day,and ernie every third day

Today she walked all three dogs

To find: the day when she walked all three dogs

From given question,

Madeline is walked every other day means every two days:  2

Buddy is walked every fourth day:  4

Ernie is walked every third day:  3

To find the day when she walked all three dogs, we have to find the least common multiple (LCM) of 2, 4, 3

L.C.M of 2, 4, 3:

List all prime factors for each number

Prime Factorization of 2 shows:

2 is prime  => [tex]2^1[/tex]

Prime Factorization of 3 shows:

3 is prime  => [tex]3^1[/tex]

Prime Factorization of 4 is:

[tex]2 \times 2 = 2^2[/tex]

For each prime factor, find where it occurs most often as a factor and write it that many times in a new list.

The new superset list is

2, 2, 3

Multiply these factors together to find the LCM.

LCM = 2 x 2 x 3 = 12

Thus on 12th day Rosita will walk all three dogs

Answer:

$18.40

Step-by-step explanation:

64*1.15=73.60

73.60/4=18.40

Answer: the second option is the correct answer

Step-by-step explanation:

Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis

change in the value of y = y2 - y1

Change in value of x = x2 -x1

y2 = final value of y

y 1 = initial value of y

x2 = final value of x

x1 = initial value of x

From the information on the graph y2 = - 1

y1 = - 2

x2 = 4

x1 = 0

Slope = ( - 2 - - 1)/(4 - 0) = - 1/4

Answer:

[tex]\frac{1}{4}[/tex]

Step-by-step explanation:

To find the slope of a line we need two points through which it is passing.

From the figure, we can see that the line passes through (0,-2) and (4,-1).

Slope of a line passing through two points [tex](x_{1},y_{1})\ and\ (x_{2},y_{2})[/tex] is given by the formula:

[tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

Here x1=0 y1=-2 x2=4 y2=-1

Slope = [tex]\frac{-1-(-2)}{4-0}=\frac{1}{4}[/tex]

Hence the slope of the line is [tex]\frac{1}{4}[/tex]

Answer: 3.017hp

Step-by-step explanation: 745.7watts = 1hp

2250watts will be (2250/745.7)hp

i.e 3.017watts

3.017 horsepower will be the value of the 2,250 watts of horsepower

Standardization and kinds of horsepower vary widely. Mechanical horsepower meaning around 745.7 watts, and the metric horsepower, which is roughly 735.5 watts, are two commonly used classifications today.  The horsepower is denoted by hp.

The value of 1 horsepower will be:

745.7 watts = 1 horsepower

Calculating the value of 2250 watts with respect to the horsepower

= (2250/745.7)

= 3.017 horsepower

Therefore, the value is  3.017 horsepower

Learn more about horsepower, here:

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     9 T-Shirts

Final answer:

To find the number of t-shirts that were neither black nor blue, subtract the number of black and blue t-shirts from the total. In this case, there were 9 t-shirts that were neither black nor blue.

Explanation:

To find the number of t-shirts that were neither black nor blue, we need to subtract the number of black and blue t-shirts from the total number of t-shirts.

20% of the t-shirts were blue, which means there were 30 x 0.20 = 6 blue t-shirts.

1/2 of the t-shirts were black, which means there were 30 x (1/2) = 15 black t-shirts.

Now, to find the number of t-shirts that were neither black nor blue, we subtract the number of black and blue t-shirts from the total number of t-shirts:

Total number of t-shirts - (Number of black t-shirts + Number of blue t-shirts) = 30 - (15 + 6) = 30 - 21 = 9.

Therefore, there were 9 t-shirts that were neither black nor blue.

Answer:

72 yrs old.

Step-by-step explanation:

The combined age

D+O=96

The owner is 3 times older than dog

O=3D

D+3D=96

4D = 96

D= 24

Now substitute the value of D in O=3D

O=3.24= 72

The owner is 72 years old.

To solve this problem, we can use algebra. Let's define the dog's age as 'd' and the owner's age as 'o'. By solving the two equations (o + d = 96 and o = 3d), we can determine that the dog is 24 years old and the owner is 72 years old.

The question asks us to find the age of a dog's owner, given that the combined ages of the owner and the dog are 96 years, and the owner's age is three times the age of the dog. We can use algebra to solve this problem.

Let's define the dog's age as 'd' and the owner's age as 'o'. We know that o = 3d (the owner's age is three times the dog's age) and o + d = 96 (the combined ages of the owner and the dog are 96).

To find the owner's age, substitute '3d' for 'o' in the second equation: 3d + d = 96. This simplifies to 4d = 96. Dividing both sides of the equation by 4 gives us d = 24, meaning the dog is 24 years old. Now we substitute d = 24 into the equation o = 3d, resulting in o = 72. Therefore, the owner is 72 years old.

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Answer:

108 degrees

Step-by-step explanation:

To solve this adequately, we simply make a substitution. We can say let sin2.5x = x

Hence we can thus have the quadratic equation form which we can solve.

x ^2 − 4x − 5 = 0.

Solving this yields the following:

x^2 +x - 5x -5 = 0

x( x + 1) -5(x + 1) = 0

(x - 5) (x + 1) = 0

x = 5 or -1

Recall the substitution:

sin2.5x = x

We cannot use the value -5 as the value of the sine function cannot be in this range. We thus ignore it and pick the -1 answer only.

Sin2.5x = -1

2.5x = arcsin(-1) = 270

2.5x = 270

x = 270/2.5 = 108 degrees

Final answer:

About 76 or 77 people were at each showing of the Van Gogh film at the art museum.

Explanation:

The student's question asks about dividing the total attendance at a film showing into equal parts to find out how many people were at each showing. To solve this, we would take the total number of attendees, which is 459, and divide it by the number of showings, which is 6. This division is necessary to distribute the total equally among all showings.

Performing the division: 459 ÷ 6 = 76.5. Since you cannot have half a person attending, it suggests that the number of attendees per showing must either be rounded to 76 or 77, if we are dealing with whole numbers. However, since the exact division gives us 76.5, this suggests that the division of attendees was not perfectly even among all showings or requires rounding for an approximate answer.

Therefore, about 76 or 77 people were at each showing of the Van Gogh film at the art museum.

Answer:

The fractional reserve banking system depends upon the confidence and trust of the public.

Step-by-step explanation:

The fractional reserve banking means that bank uses the deposits of customers to lend money to the borrowers.

Answer:

[tex]x=\frac{83}{50}[/tex]

Step-by-step explanation:

we know that

If the three points are collinear

then

[tex]m_A_B=m_A_C[/tex]

we have

A (1, 2/3), B (x, -4/5), and C (-1/2, 4)

The formula to calculate the slope between two points is equal to

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

step 1

Find the slope AB

we have

[tex]A(1,\frac{2}{3}),B(x,-\frac{4}{5})[/tex]

substitute in the formula

[tex]m_A_B=\frac{-\frac{4}{5}-\frac{2}{3}}{x-1}[/tex]

[tex]m_A_B=\frac{\frac{-12-10}{15}}{x-1}[/tex]

[tex]m_A_B=-\frac{22}{15(x-1)}[/tex]

step 2

Find the slope AC

we have

[tex]A(1,\frac{2}{3}),C(-\frac{1}{2},4)[/tex]

substitute in the formula

[tex]m_A_C=\frac{4-\frac{2}{3}}{-\frac{1}{2}-1}[/tex]

[tex]m_A_C=\frac{\frac{10}{3}}{-\frac{3}{2}}[/tex]

[tex]m_A_C=-\frac{20}{9}[/tex]

step 3

Equate the slopes

[tex]m_A_B=m_A_C[/tex]

[tex]-\frac{22}{15(x-1)}=-\frac{20}{9}[/tex]

solve for x

[tex]15(x-1)20=22(9)[/tex]

[tex]300x-300=198[/tex]

[tex]300x=198+300[/tex]

[tex]300x=498[/tex]

[tex]x=\frac{498}{300}[/tex]

simplify

[tex]x=\frac{83}{50}[/tex]

Answer:

the nth term of the sequence is [tex]a_n=6n+7[/tex]

Step-by-step explanation:

Given : An arithmetic sequence begins as follows: [tex]a_1=13, a_2=19[/tex]

To find : Which of the following gives the definition of its nth term?

Solution :

The nth term of the A.P is [tex]a_n=a+(n-1)d[/tex]

The first term is [tex]a=a_1=13[/tex]

The common difference is [tex]d=a_2-a_1[/tex]

[tex]d=19-13=6[/tex]

Substitute in the formula,

[tex]a_n=13+(n-1)6[/tex]

[tex]a_n=13+6n-6[/tex]

[tex]a_n=6n+7[/tex]

Therefore, the nth term of the sequence is [tex]a_n=6n+7[/tex]

The nth term of the given arithmetic sequence is defined by the formula an = 13 + (n-1)*6. This is derived from the general formula for an arithmetic sequence and using the given first two terms.

In this given problem, we have an arithmetic sequence. An arithmetic sequence is a list of numbers in which each term is obtained by adding a constant difference to the preceding term. For this particular sequence, the first term (a1) is 13, and the second term (a2) is 19. Hence, the common difference (d) between the terms is 19 - 13 = 6.

The general formula for the nth term (an) of an arithmetic sequence is given by an = a1 + (n-1)*d. In this situation, to represent any term in the series, the formula would be an = 13 + (n-1)*6. This formula can generate any term in the sequence, given the term number.

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Answer:

??????????????????? what

Answer:

  $295

Step-by-step explanation:

Let d represent the amount Danny contributed. Then Beth contributed (d+80) and Katie contributed ((d+80)-20) = (d+60). The total from the three friends is ...

  d + (d+80) +(d+60) = $1025

  3d = 885 . . . . . . . . . . . . . . . . . . . subtract 140

  d = 295 . . . . . . . . . . . . . . . . . . . . divide by 3; Danny's contribution

Danny contributed $295.

Answer:

Step-by-step explanation:

1) The sum of angles on a straight line is 180 degrees. Therefore

75 + a + 70 = 180

145 + a = 180

a = 180 - 145 = 35 degrees

2) Sum of the angles in a triangle is 180 degrees. Therefore,

a + b + 95 = 180

35 + b + 95 = 180

130 + b = 180

b = 180 - 130 = 50 degrees

3) c + 95 = 180 degrees (sum of angles on a straight line).

c = 180 - 95 = 85 degrees

4) 70 + c + d = 180 degrees

70 + 85 + d = 180

155 + d = 180

d = 180 - 155 = 25 degrees

5) e = 75 degrees

6) f + e + 75 = 180 degrees

f + 75 + 75 = 180

f + 150 = 180

f = 180 - 150 = 30 degrees