Mathematics College

Mikayla withdraws​ $20 on 4 different days during a week. Find the total change in her account balance after the withdrawals.

Answers

Answer 1

20 times 4 = 80

 so the change in her account would be negative 80 dollars

Answer 2

The change in her account after 4 withdrawals of $20 the change in her account will be $(D - 80)

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given that Mikayla withdraws​ $20 on 4 different days during a week.

Assuming she had $D before she had made any withdrawals.

∴ The situation can be represented numerically as,

(D - 20 - 20 - 20 - 20) dollars.

= (D - 80) dollars.

learn more about numerical expressions here :

https://brainly.com/question/14642484

#SPJ2

Related Questions

360 miles driven on 12 gallons of fuel; 270 miles driven on 9 gallons of fuel. Use ratios or rates are equivalent. Explain your reasoning. Show all your work.

Answers

Well you find the unit rate of both rates. So 360/12=30 and 270/9=30. So both the rate are 30 miles per gallon
 

Mr. Potts, the college Pastry Chef, baked three apple pies, two blueberry pies, five cherry pies, and six key lime pies for the student fundraiser. What percent of the pies were apple?

Answers

3 apple, 2 blueberry, 5 cherry, 6 key lime.....for a total of 16 pies

what percent of the pies were apple...

3/16 = 0.1875 = 18.75% <=

Answer:

18.75%

Step-by-step explanation:

Mr. Potts, the college Pastry Chef baked pies for the student fundraiser.

He baked apple pies = 3

Blueberry pies = 2

Cherry pies = 5

Key lime pies = 6

We have to calculate the percentage of the apple pies.

Total number of pies that he baked =  3 + 2 + 5 + 6 = 16 pies

Percentage of Apple pies = [tex]\frac{3}{16}[/tex] × 100

                                           = 0.1875 × 100

                                           = 18.75%

18.75% was apple pie.

David has $425 worth of items in his shopping cart. He receives a discount of 30% for the items at the checkout. If he then has to pay an 8% sales tax, what is the final amount that David paid?

Answers

425-(425•0.3)=297.5   297.5+(297.5•0.08)=321.3
he paid $321.30

What is the approximate length of the diameter,d?

Answers

C = pi x d
d = C / pi
d = 44 / 3.14
C = 14

answer
b. 14 in

Answer:

The diameter of the circle is 14in

Step-by-step explanation:

There is an equation that says: If you have the circumference (C) of a circle you can get the Diameter (d):

d=C/π(constant number)

In the problem you have C=44 in

Then:

π=3,1416

d=44in/3,1416

d=14in

Simplify 9 - 10

A:-19
B: -1
C: 1
D: 19

Answers

your answer is B.-1 because you cat subtract 10 from 9 so it goes into the negatives. 100% sure

3(4x + 3) = 2x - 5(3 - x) + 2

Answers

Your answer is: x= -22/5

Here are the steps:

Expand:
12x+9=7x-13

Subtract 9 from both sides:
12x+9-9=7x-13-9

Subtract 7x from both sides:
12x-7x=7x-22-7x

Simplify:
5x=-22

Divide both sides by 5:
5x/5=-22/5

Simplify:
x=-22/5


Thus, x=-22/5.

The solution to the given-equation represented by "3(4x + 6) = 9x + 12" is : (b) x = -2.

To find the solution to the equation 3(4x + 6) = 9x + 12, we simplify and solve for x,

First, we distribute the 3 to both terms,

12x + 18 = 9x + 12

Next, we separate variable-term by subtracting 9x from both sides:

12x - 9x + 18 = 9x - 9x + 12,

Simplifying further:

We get,

3x + 18 = 12,

Next, we separate "x" by subtracting 18 from both sides,

3x + 18 - 18 = 12 - 18,

3x = -6,

(3x) / 3 = (-6) / 3,

x = -2

Therefore, the correct answer is (b) x = -2.

Learn more about Solution here

https://brainly.com/question/16235478

#SPJ6

The given question is incomplete, the complete question is

What is the solution to the equation 3(4x + 6) = 9x + 12?

(a) x = 2,

(b) x = -2,

(c) x = 10,

(d) x = -10.

A coral reef grows 0.13m every week. How much does it grow in 9 weeks?

Answers

To solve this we take .13 and times it by 9. So 9 x .13 = 1.17m
It would grow 1.17m in 9 weeks because .13 x 9 = 1.17

19³ x 19³ =
1. 19 *exponent* 3
2. 19 *exponent* 4
3. 19 *exponent* 5
4. 19 *exponent* 6
--
Please help!!

Answers

To multiply powers with the same base, ADD the exponents.
19 is the base. 3 is the exponents.
Both powers have the same base, 19, so write the same base, 19 and add 3 + 3 for the exponent.

Also, there is no need to write "exponent".
Use the symbol ^ (shift-6) to mean exponent.

19^3 * 19^3 = 19^6

Estimate 615-342 please help me

Answers

600 plus 300

615 rounds to 600
342 rounds to 300
Answer 900
600 - 300 = 300 (if you're rounding to the nearest hundredth)
620 - 340 = 280 (if you're rounding to the nearest tenth)

1.825 x 10^-4 write the following number in stand form (decimal).

Answers

This is in 1.825 x 10^-4 is in scientific notation.  Since we have a power ^ raised to a -4 this is going to be a decimal. take the number 1.825 and move the decimal 4 places to the left and add zeros along the way. So 1.825 = .0001825 in standard form

Answer: .0001825


A dress is sold for $980 plus 15% GCT. what is the total cost of the dress

Answers

1,127$ is the price of the dress

After eating a 100 calorie snack mark exercised to burn 100 calories show answer in number line

Answers

If you're gaining 100 calories and then burning all 100 off, what's your net calorie gain in this scenario?

A correlation coefficient of .89 indicates that _____.

Answers

Final answer:

The correlation coefficient indicates the strength of the relationship between variables. The closer it is to 1, the stronger the relationship. If it is 0, there is no relationship.

Explanation:

The number portion of the correlation coefficient indicates the strength of the relationship. The closer the number is to 1 (be it negative or positive), the more strongly related the variables are, and the more predictable changes in one variable will be as the other variable changes. The closer the number is to zero, the weaker the relationship, and the less predictable the relationships between the variables becomes. For instance, a correlation coefficient of 0.9 indicates a far stronger relationship than a correlation coefficient of 0.3. If the variables are not related to one another at all, the correlation coefficient is 0.

Need help with this been trying to solve it

x/3ytimes3xy/5dividedby4y^2/5x^2

Fractions,

PLEASE HELP

Answers

The answer is x^2y^2/5x^2 / 20.
[tex]\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\ a^{-{ n}} \implies \cfrac{1}{a^{ n}} \qquad \qquad \cfrac{1}{a^{ n}}\implies a^{-{ n}} \qquad \qquad a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\ -------------------------------[/tex]

[tex]\bf \cfrac{\frac{x}{3y}\cdot \frac{3xy}{5}}{\frac{4y^2}{5x^2}}\implies \cfrac{\quad \frac{3x^2y}{15y}\quad }{\frac{4y^2}{5x^2}}\implies \cfrac{3x^2y}{15y}\cdot \cfrac{5x^2}{4y^2}\implies \cfrac{\underline{15} x^4y}{\underline{15}\cdot 4y^3}\implies \cfrac{x^4y^1}{4y^3} \\\\\\ \cfrac{x^4}{4y^3y^{-1}}\implies \cfrac{x^4}{4y^{3-1}}\implies \cfrac{x^4}{4y^2}[/tex]

Adam makes $632 gross income per week and has claimed four allowances. According to the table below, what is Adam’s net income after tax withholding? 2007-05-03-00-00_files/i0140000.jpg a. $99 b. $533 c. $731 d. $502

Answers

The answer is B(533)

Answer:

The net income of the tax withholding $533 dollars.

Confirmed on R09.

in each variety pack of fruit juice, there are 3 voxes of apple juice, 2 boxes of grape juice, and 1 box of orange juice. In a display in the store, there are 16 cases of juice with 8 variety packs in each case. How many boxes of juice are in the display?

Answers

384 boxes of juice are in the display because if they are 3 in each pack and each case has 8 then just do 8 * 3 which is 24. But since there are 16 cases you would take 24 and times that by 16 which would equal 384, the total number of juice boxes. I hope this helps!

The total number boxes of juice are 768 in the display.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We have been given that in each variety pack of fruit juice, there are 3 voxes of apple juice, 2 boxes of grape juice, and 1 box of orange juice.

In a display in the store, there are 16 cases of juice with 8 variety packs in each case therefore,

Each variety pack of fruit juice = 3 + 2 + 1 = 6 juice

8 variety packs = 8 x 6 = 48

Now, the total number boxes of juice are in the display

16 x 48

= 768

Learn more about the unitary method, please visit the link given below;

https://brainly.com/question/23423168

#SPJ2

Marta processed and shipped 424 orders last year. She polled 128 of her customers, 99 of whom replied that they were completely satisfied with their orders.

To the nearest whole percent, the estimated population proportion of the customers who were completely satisfied was ___%

Answers

99÷128=0.7734375     multiply by 100 the round to whole number and get 77%
77% is answer

Answer:

77%

Step-by-step explanation:


Makayla's local movie theater has a moviegoer club that charges an annual registration fee of 25 dollars.However, movie tickets are discounted for members at 6 dollars per ticket, instead of 9 dollars per ticket.Let m equal the number of movie tickets Makayla purchases in a year. Write a function to model the amount of money Makayla spent going too the movies during the year she joined the club. C(m)=6x+25 The domain is best represented by: A)integers B)whole numbers C)rational numbers D)real numbers Algebra chestercat

Answers

d is the answer;;;;;;;;;;;;;;;;;;;;;;;;;;;

An electrician has 4.1 meters of wire. How many strips 7/10 meters long can he cut?

Answers

4.1 multiplied by .7 = 2.87 strips

In a biology lab, a student has measured the lengths of 30 palmetto bugs in inches. he computes the mean and standard deviation as 4.1 inches and 1.2 inches, respectively. he later finds out that he was supposed to calculate the mean and standard deviation in centimeters instead of in inches. what is the new standard deviation of his sample, in centimeters? (note: 1 in = 2.54 cm)

Answers

To solve for the mean and standard deviation in centimeters, we just need to convert the figures from inches to centimeters given by the conversion factor of 1 inch = 2.54 cm.

Solution:

Mean = 4.1 inches x (2.54 cm/1 inch) = 10.41 cm
Standard deviation = 1.2 inches  x (2.54 cm/1 inch) = 3.05 cm

ANSWERS: Mean = 10.41 cm; Standard Deviation = 3.05 cm

When you use the distance formula, you are building a(n) _____ whose hypotenuse connects two given points.

Answers

When you use the distance formula, you are building a(n) right triangle whose hypotenuse connects two given points.
When you use the distance formula, you are building a right triangle. 

I hope this helps!

Find the total cost of 3.4 pounds of caramel nut clusters at $8.25 per pound and 5.2 pounds of chocolate covered cashews at $9.35 per pound.

Answers

3.4 lbs caramel nut clusters = $28.05
5.2 lbs chocolate covered cashews = $48.62
3.4 x 8.25 = 28.05
5.2 x 9.35 = 48.62
 the total cost is:     $28.05 + $48.62 =$76.67

Bass - samples: the bass in clear lake have weights that are normally distributed with a mean of 2.1 pounds and a standard deviation of 0.9 pounds. (a) if you catch 3 random bass from clear lake, find the probability that the mean weight is less than 1.0 pound.

Answers

Now we need to find the percentage of scores that are below -1.75. To do this, we need to look -1.75 up in the normal distribution table (your teacher should have given you one or there should be one in your textbook). If we do this, we find that approximately 4% of scores are below -1.75. z = (X - M)/S, where X is a score, M is the mean and S is the standard deviation. In your case, we have z = (1 - 2.4)/.8. This gives us a z-score of -1.75.

how many liters of a 20% acid solution must be mixed with a 50% acid solution to obtain 12 liter of a 30% solution?

Answers

You need an equation for the solutions and an equation for the acid.
Let x = amount of 20% acid solution
Let y = amount of 50% acid solution.


The equation for the solution:
You want a total of 12 liters, so

x + y = 12

The equation for the acid:
The 20% solution has 20% acid, so in x liters of the 20% solution, you have 0.2x liters of acid.
The 50% solution has 50% acid, so in y liters of the 50% solution, you have 0.5y liters of acid.
The combined solution is 12 liters of 30% acid, so it has 30% * 12 liters of acid = 3.6 liters of acid.

0.2x + 0.5y = 3.6

Now you solve the two equations in a system of equations.

x + y = 12
0.2x + 0.5y = 3.6

Multiply the second equation by 10:
2x + 5y = 36

Multiply the first equation by -2:
-2x - 2y = -24

Add the last two equations:

3y = 12

y = 4

Substitute y = 4 in the first original equation:

x + y = 12

x + 4 = 12

x = 8

Answer: 8 liters of 20% solution and 4 liters of 50% solution.

If one million people have equal chances of being called by telephone from a broadcasting show, then the probability of one particular person receiving that call is .

Answers

1 /million is the chance
1/1,000,000 or in decimals 0.000001 is the chance

Every 23 hour, Harris can sew 16 pair of jeans. What is Harris's rate in pairs of jeans per hour?

Answers

Harris can sew 1.4375 pairs of jeans per hour. 
16/24 = 2/3 
rate = 2/3 pairs of jeans per hour

If the population decreases with a constant rate of change and the decrease is 7% in the first year, what will the town's population be in 6 years? (round to the nearest person)

Answers

Given that the population of a town today is 33,000 people.

If the population decreases with a constant rate of change and the decrease is 7% in the first year.

The decrease in the population of the town in the first year is given by 0.07 x 33,000 = 2,310

The decrease in the population of the town in 6 years is given by 2,310 x 6 = 13,860

Therefore, in 6 years, the town's population will be 33,000 - 13,860 = 19,140

Four friends have decided to visit the art museum. Admission costs $5.75 per person. If x represents the total cost for the four friends to go to the museum, which equation is true?
A. $5.75 • x = 4
B. 4 • $5.75 = x
C. 4 + x = $5.75
D. 4 • x = $5.75

Answers


Answer is B

4 * $5.75 = x

Answer:

B

Step-by-step explanation:

I just did a test

The sum of three numbers is 142. The first number is 8 less than the second. The third number is 4 times the second. What are the numbers?

Answers

x = 1st number, y = 2nd number, z = 3rd number

x + y + z = 142
x = y - 8
z = 4y

y - 8 + y + 4y = 142
6y - 8 = 142
6y = 142 + 8
6y = 150
y = 150/6
y = 25 <=== the 2nd number

x = y - 8
x = 25 - 8
x = 17 <== the 1st number

z = 4y
z = 4(25)
z = 100 <=== 3rd number

Sarah washes cars at the car wash. She makes $8.25 per hour and earns $30 in tips per day. Give an expression that Sarah could use to calculate her daily earnings.

A) $8.25x + $30
B) $8.25 + $30
C) $8.25 - $30
D) $8.25 + $30x

Answers

you would need to multiply 8.25 by the number of hours worked (x) and then add the tips

 so it would be A. 8.25x+30

i think the answer is A

Other Questions
PLZ Help I really need to know how to do thisSKIINGThedistanceinmetersthatapersontravels on skis can be modeled by d(t) = 0.2t^2 + 3t,where t is the time in seconds. Use the RemainderTheorem to find the distance traveled after 45seconds. Which type of rock can melt to become magma? What is the greatest difference between chinese and the indus river valley civilizations? Dara went on vacation to New York City 2012. She bought a $20 pass to ride the subway . Each time she rode the subway it cost her $2.25 . If she rode the subway 7 times , how much money was left on her pass at the end of her trip ? A veteran will be giving a speech to middle school children during a visit to a national cemetary. Choose the items below that best describe the audience expectation, knowledge, and purpose of the physical setting.select the ones that apply:The audience will need help in understanding what it's like to be in war.:The audience will need help in understanding what a cemetary is.:The audience can expect a speech that refers to past wars.:The audience can expect a speech that explains why it's important to honor veterans.:The setting can accommodate large crowds:The setting reminds the listeners of the sacrifice of war. what is the radious of a circle with a circumference of 13 ft? which is the best summary of the plot of an episode of war? cunto tiempo hace que pas lo siguiente? complete las oraciones con las palabras indicadas. pizarro fund (fundar) la ciudad de lima (ms de 450 aos). Kate and tom are dating. kate's car breaks down and she calls tom to come pick her up because she is stranded. if tom chooses to go and help kate, this is likely to What did Samuel Adams form after the Boston Massacre in order to keep better track of what the British were doing in each colony? Committee of Correspondence Committee of Correction Town Meetings Committee of Colonies list four animals humans may attempt to rescue The hellenistic philosophy advocating the avoidance of both joy and pain is called can someone check my answer? also tell me what property I used. As of 2011, who was the youngest person to reach the office of president by any means, including assuming office after the death of a president Match the technological inventions with their effects lever water mill aqueduct Music appreciation the romantic era. Russian nationalists wanted to compose music withoutA.Western influences.B.Italian tempo markings.C.lyrics.D.stringed instruments. Lifeeeeee skillssssssssdd helpppppppppp pleaseeeeeeeeeeeeeeeeeeeeewrite an example of an occupational practical problem Positive correlations have been found between ____ and health outcomes. Which of the following is an example of a biased source?a primarily fact-based article for an academic journala debate that presents both sides of a controversial issuean editorial that only gives the writers opinion on a timely topican article with quotations from diverse thinkers on a political issue In romeo and juliet, who is out picking wild flowers the morning after romeo and juliet meet? Steam Workshop Downloader