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balu736 [363]
4 years ago
12

Miley music has a sale on music CDs all music CDs are discounted 15% Marianas receipt indicates that she saved $3 on her CD purc

hase what is the full price of her music CD before the discount
Mathematics
2 answers:
Alex787 [66]4 years ago
6 0
If x is the price before a sale
x-0.15x=x-3
0.85x=x-3
3=0.15x
x=20

The original price is $20
Nadusha1986 [10]4 years ago
4 0

Answer: The original price of her music CD before discount is $20.

Step-by-step explanation:

Let x be the original price of her music CD.

Discount rate = 15%

At discount she saved = $3

So, According to question, our equation becomes

15%x= 3

0.15x= 3

x=$20

Hence, the original price of her music CD before discount is $20.

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Dominique buys $14.95 worth of gasoline for her car. If the gas station charges $1.43 per gallon, how many gallons did she get?
Zolol [24]

Answer:

$10.45

Step-by-step explanation:

14.95 divided by 1.43 = 10.50

5 0
3 years ago
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A salesman receives a commission of $4 for every pair of dress shoes he sells. He is paid $3 for every pair of athletic shoes he
Crank

Answer: he sold 9 pairs of dress shoes.

he sold 4 pairs of athletic shoes.

Step-by-step explanation:

Let x represent the number of pairs of dress shoes that he sells.

Let y represent the number of pairs of athletic shoes that he sells.

The total number of pairs of shoes that he sold in a day is 13. It means that

x + y = 13

The salesman receives a commission of $4 for every pair of dress shoes he sells. He is paid $3 for every pair of athletic shoes he sells. The commission that he got on that day was $48. It means that

4x + 3y = 48- - - - - - - - - - 1

Substituting x = 13 - y into equation 1, it becomes

4(13 - y) + 3y = 48

52 - 4y + 3y = 48

- 4y + 3y = 48 - 52

- y = - 4

y = 4

x = 13 - y = 13 - 4

x = 9

4 0
3 years ago
After you find the solution, how would you check to make sure your answer is correct?
krek1111 [17]

Answer:

Plug in your variables value.

Step-by-step explanation:

For your case, plug in -6 into the y slot

12(5+2y)= -(6-9y) +4y

12(5+2x-6)= -(6-9x-6)+4y see if that works!

5 0
3 years ago
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How do you do order pairs
Flura [38]
It should look like this (x,y). so the x variable goes first and y goes second
8 0
3 years ago
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Use the product rule to simplify the radical— square root 315
Luden [163]
  • Product rule with radicals: √ab = √a × √b

Using the product rule, simplify the radical as such:

√315 = √7 × √45 = √7 × √9 × √5 = 3 × √7 × √5 = 3√35

<u>The simplified radical of √315 is 3√35.</u>

5 0
4 years ago
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