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solniwko [45]
3 years ago
5

Rick buys 3 CDs and 5 video games. The cost of one video game is $12.00 more than the cost of one CD. If Rick spends $164.00, wh

at is the cost of each CD?
Mathematics
1 answer:
Dmitry [639]3 years ago
4 0

Step-by-step explanation:

x = price per video game

y = price per CD

164 = 5x + 3y

and then we know

x = y + 12

now we can use this as substitute in the first equation :

164 = 5(y + 12) + 3y = 5y + 60 + 3y = 8y + 60

104 = 8y

y = $13

x = y + 12 = 13 + 12 = $25

so, each CD costs $13.

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It took Perla 8 games to score 30 points.At that rate,how many games will it take her to score 45 points?
BARSIC [14]

Answer:

I am pretty sure you can set up a proportion.

12 games is the answer

Step-by-step explanation:

8                  X

_        *         __

30                45


8*45=30x

360=30x

x=12

4 0
3 years ago
When is the net force on an object equal to zero?
morpeh [17]
I believe it is when the forces action on the object are balanced. Hope it helps!
7 0
3 years ago
Use a calculator to find each answer. Round to the nearest tenth.
Harrizon [31]
7623, 27.8, 76.9, and 8401 it is really simple just use a calculator........
5 0
3 years ago
What is the solution to the system of equations? (You can either do the substitution or elimination method) x - 2y = 19 x + 3y =
masha68 [24]

Answer:

D. (17,-1)

Step-by-step explanation:

We'll start by canceling out x. To do so, multiple the first equation by -1

-1( x - 2y)=( 19 )(-1)

This gives us:

-x +2y = -19

x + 3y = 14

Add the equations together:

→ 5y = -15

→ y = -1

Plug in y = -1 into an equation:

→ x + 3(-1) = 14

→ x - 3 = 14

→ x = 17

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Hope this helps!

4 0
2 years ago
Paul drinks 6 cups of coffee each day. Each cup contains 275 milliliters of coffee. How
scZoUnD [109]
<h3>Answer:  11.55 liters</h3>

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

Work Shown:

275 mL = 275/1000 = 0.275 L

1 cup = 0.275 L

6 cups = 6*0.275 L = 1.65 L

He drinks 1.65 L per day, so over 7 days he drinks a total of 7*1.65 = 11.55 liters.

5 0
2 years ago
Read 2 more answers
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