Molly and Maddie are clothes shopping. Molly has $100.00 and a coupon for a $5.00 discount at a clothing store where each shirt costs $15.00. Molly thinks that she can buy 8 shirts, but Maddie says that Molly can buy 7 shirts. The equations they used to model the problem are listed below.

Solve each equation algebraically, justify your steps, and determine who is correct and why.

Molly's equation
15x + 10 = 100

Maddie's equation
15x - 10 = 100

Answers

Answer 1

Step-by-step explanation:

let us start with

Molly's equation

15x + 10 = 100

solving for x we have

15x=100-10

15x=90

x=90/15

x=6

Maddie's equation

15x - 10 = 100

solving for x we have

15x=100+10

15x=120

x=120/15

x=8

well, from the solution niether of them is correct


Related Questions

Find the value of x

Answers

Answer:

134 degrees

Step-by-step explanation:

the angles in a triangle always add up to 180.

86+48=134

to find the last angle you subtract 180-134

this gives you 46 degrees

a straight line is always measured as 180 degrees.

180-46=134

so x=134 degrees

Which expression is equivalent to x^-5/3?

Answers

Answer:

The one you selected is true <3

Step-by-step explanation:

Answer:

The one you selected is true I agree! :D

Step-by-step explanation:

Solve for y: 6x + 2y = 12

PLEASE SHOW STEPS.
(Brainliest is going to be given once 2 people answer.)
# 12 Points

Answers

solve for y first

2y=12-6×

divide each term by 2 and simplify

y=6-3x

Answer:

y=6-3x

Step-by-step explanation:

6x+2y=12

6x+2y=12 divide all by 2

3x+y=6 subtract 3x from both sides

y=6-3x

PLEASEEEEE HELP

f(x) = 2x^2+ 6 when f (4)

Answers

Hopefully this is right!

x(1+y)=z, for x
[tex]x(1 + y) = z for x[/tex]

Answers

x(1+y)=z or x=z1+y


I really hope this helps heh.

A toy glider plane is launched from a height of 50 feet above the ground. If the plane descends at a constant rate of 1.3 feet per second, then its height, in feet, after s seconds can be found using the equation h = 50-1.3s. Use the equation to find the height of the glider 9 seconds after it was launched.

Answers

Answer:

38.3 feet

Step-by-step explanation:

h=50-1.3(9)

h=50-11.7

h=38.3

It takes Susana 10 seconds to complete 5 math
problems. How many math facts can she complete
in 35 seconds?

Answers

Answer:

If you understand what I wrote you can get the answer.

Step-by-step explanation:

First find how long it takes her for each problem which is 10 seconds / 5 problems = 2 seconds per problem. Then take 35 seconds and divide it by 2 seconds which gives the number of problems she did in 35 seconds.

select all of the following expressions that are equivalent to 9 1/2

Answers

where are the options???

Easy question the first person to answer it right gets 10 points: 1+2+3+4+5+6+7+8+9+10=?

Answers

Answer:

55

Step-by-step explanation:

Answer:

55

Step-by-step explanation:

Graph the function f(x) = -x-8x-13

Answers

Answer:

the answer is there...

Use substitution to solve the system.
x = 3y +7
3x + 4y = 8

Answers

Answer:

x=4, y=-1

Step-by-step explanation:

x=3y +7. equation 1

3x+4y=8. equation 2

substitute equation 1 into equation 2

3 (3y +7)+4y =8

9y+21+4y=8

13y+ 21=8

13y=8-21

y=-13/13

y=-1

substitute the value of y into equation 1

x=3(-1)+7

x=-3+7

x=4

Rick has 3 pencils, they measures 9.7 inches, 6.25 inches and 8.5 inches respectively. What is the total length of the pencils altogether?

Answers

Answer:

24.45 inches altogether

Step-by-step explanation:

9.7 inches + 8.5 inches + 6.25 inches = 24.45 inches

Ben can type 153 words in 3 minuets. At this rate, how many words can he type in 10 minuets?

Answers

Answer:

510

Step-by-step explanation:

153/3=51 (words per min)

51x10=510 (words per 10 min)

Answer:510

Step-by-step explanation:

A candidate won an election by beating his nearest rival by 724541 votes. If the candidate received 1563198 votes, how many votes did his rival get?​

Answers

His rival got 838,647 votes
1,563,193 votes - 724,541 more votes than his rival = 838,647 votes (rival)

Answer:

838657

Step-by-step explanation:

1563198 - 724541 = 838657

Just use a calculator .

Jessie read three books in one week. At this rate, how many books will she read in 3 weeks?

Answers

Answer:

Jessie will read 9 books in 3 weeks.

Step-by-step explanation:

3 x 3 = 9

Answer: 9

Step-by-step explanation: If you need an equation, you can create one:

t = total number of books read

w = weeks

t = 3w

The 3 is there because she reads 3 books weekly, so you multiply the number of weeks by the number of books she reads.

Plug in 3 weeks:

t = 3(3)

t = 9 books

Jessie reads 9 books in 3 weeks.

A mathematical sentence with an equal symbol used (I need the definition of it)

Answers

Answer:

An equation is a mathematical sentence containing an equals sign. It tells us that two expressions mean the same thing, or represent the same number. An equation can contain variables and constants.

Step-by-step explanation:

Riley was scuba diving 12 feet below sea level. She dove 8 feet further down what now what is the expression.

Answers

Answer:

-12+(-8)=-20

-20 is the answer

HELPPPP MEE PLEASEEE!!

Answers

Answer:

6 , 1

5 , 2

4 , 3

Step-by-step explanation:

Just swap the numbers.

Answer:

x (input) y (output)

     6             1

     5             2

     4             3

     3             4                

Step-by-step explanation:

Because it is the inverse of the red table, the blue table would be the opposite: (Answers are shown above)

I hope this helps :)

-4b+ 5(1 - 6b) = 243

Answers

-4b + 5(1 -6b) = 243
-4b + 5 - 30b = 243
-34b = 243 -5
-34b = 238
-b = 7
b = -7
the answer is -7

-4b+5(1-6b)=243
-4b+5-30b=243
-34b+5=243
-34b=238
-b=7
b=-7

wels at its next

3. The Henderson Hawks minor-league baseball team is giving away baseballs an

game. The balls cost $3 each and the towels cost $2 each. The team wants to give away

200 items and nave 5000 to spend. How many of each item should the team give away Show your

work or explain your reasoning.

Answers

This question is not correctly written

Complete Question

The Henderson Hawks minor-league baseball team is giving away baseballs an

game. The balls cost $3 each and the towels cost $2 each. The team wants to give away 200 items and have 500 to spend. How many of each item should the team give away Show your

work or explain your reasoning.

Answer:

They should give away 100 balls and 100 towels

Step-by-step explanation:

Let the number of balls = x

Let the number of towels = y

x + y = 200........ Equation 1

y = 200 - x

$3 × x + $2 × y = $5000

3x + 2y = 5000...... Equation 2

3x + 2(200 - x)= 5000

3x + 400 - 2x = 5000

Collect like terms

3x - 2x = 500 - 400

x = 100

Number of balls to be given away = 100

Note:

y = 200 - x

y = 200 - 100

y = 100

Number of towels to be given away = 100

Therefore, they should give away 100 balls and 100 towels

Which shows a difference of squares?

10 y squared minus 4 x squared
16 y squared minus x squared
8 x squared minus 40 x + 25
64 x squared minus 48 x + 9

Answers

Answer:

8x^2 - 40x + 25

Step-by-step explanation:

The terms that show a difference of squares are given by:

10y² - 4x²

16y² - x²

What is a difference of squares?

It is when the square of two terms are subtracted, in the following format:

[tex]a^2 - b^2[/tex]

In this problem, the first two items are difference of squares, as:

[tex]10y^2 - 4x^2 = (\sqrt{10}y)^2 - (2x)^2[/tex]

[tex]16y^2 - x^2 = (4y)^2 - x^2[/tex]

More can be learned about difference of squares at https://brainly.com/question/24673551

At a basketball game, 95% of people attending were supporting the home team, while 5% were supporting the visiting team. If 532 people attending the game supported the home team, what was the total number of people attending the game?

Answers

Answer:

559

Step-by-step explanation:

532*.05

26.6

aout 27 people attended the other team's game

532+27 = 559

80 inches of snow over 10 days what is the rate and unit rate

Answers

Answer:

The rate is 80 in. : 10 days

The unit rate is 8 in. : 1 day

Step-by-step explanation:

Divide 80 by 10, you get 8 which is the amount of snow you would get in 1 day.

7x-6=21+7x solve for x. ​

Answers

Answer: x= 34/7

Step-by-step explanation:hope this helps!

Which values from this set {−36, −32, −16, 0, 4, 16} satisfy this inequality? −14x+6≥14 −32, −16, 0, 4, and 16 only 0, 4, and 16 only −36, −32, and −16 only −36 and −32 onlyWhich values from this set {−36, −32, −16, 0, 4, 16} satisfy this inequality? −14x+6≥14 −32, −16, 0, 4, and 16 only 0, 4, and 16 only −36, −32, and −16 only −36 and −32 only

Answers

Answer:

Step-by-step explanation:

Given the inequality −14x+6≥14, we are to find the range of x that will make the inequality true.

Given −14x+6≥14

Subtract 6 from both sides.

−14x+6-6≥14-6

-14x≥8

-7x≥4

Multiply both sides by -1

-(-7)x≤-4

7x ≤ -4

x≤-4/7

This shows that the values of x is always less than or equal to -0.57

Hence the values less tan the value of x in the inequality are -36, -32 and -16

Any help on this please ?

Answers

Answer:

(0,-5), I believe.

Step-by-step explanation:

Answer:

It would be -5

Step-by-step explanation:

You have to plug in 0 into the function so it would look like

g(0)= (2/5 )(0) -5

g(0)= 0 -5

g(0)= -5

help with this question and i will do brainliest (if there are multiple answers)

Answers

So we have 2/3 s + 5/6 s
In order to simplify this, we need to get a common denominator and we can do this by multiplying 2/3 by 2, which yields 4/6 s.

Now, we add the two together:
4/6(s) + 5/6(s) = 9/6 (s) = 21

Finally, we can divide 21 by 9/6 which yields 126/9. This simplifies to 14.

S = 14

how do you solve inequalities and how do you graph them?​

Answers

Answer:

Graph a Linear Inequality

Step-by-step explanation:

Rearrange the equation so "y" is on the left and everything else on the right.

Plot the "y=" line (make it a solid line for y≤ or y≥, and a dashed line for y< or y>)

Shade above the line for a "greater than" (y> or y≥) or below the line for a "less than" (y< or y≤).

2. Ilang kontinente ang bumubuo sa daigdig?
A. 5
B. 6
C. 7
D. 8
D

Answers

Answer:

C.7

Step-by-step explanation:

Ang mundo ay gawa sa tuluy-tuloy na dami ng lupa.

Ang mga lupaing ito ay nahahati sa mga rehiyon na tinutukoy namin bilang mga kontinente ng mundo.

Mayroong 7 mga kontinente sa mundo at ang mga ito ay:

1) Asya

2) Africa

3) Hilagang Amerika

4) Timog Amerika

5) Antarctica

6) Europa

7) Australia.

what is x in the equation 6.25x + 12 = 30.70?

Answers

Answer:

x=2.99200

Step-by-step explanation:

6.25x=18.7

x=2.99200

6.25x=18.7    the answer is x=2.992

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