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STALIN [3.7K]
3 years ago
6

Sara says, "If you subtract 19 from my number and multiply the difference by - 2, the result is -4."

Mathematics
2 answers:
denis-greek [22]3 years ago
8 0
Her number is 27, I hope
andrey2020 [161]3 years ago
7 0
I don’t know how you got 27 but that’s not right. Sara’s number is 21. Because this is the problem

X=Sara’s number
(19-x) • 2 = -4
38-2x = -4
To bring 38 to the other side subtract it
-2x = -4 -38
-2x= -42
Divid -2 by -42 to get X by itself
X = 21

Put X into the equation to check
(19-21) •2= -4
-2•2 = -4
-4=-4

If I got that wrong I’m sorry and I’m sorry for being cocky but 27 doesn’t make sense but I could have gotten the equation wrong in the beginning
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Answer: x=-6

Step-by-step explanation:

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A sporting good store is offering an additional 30% off all clearance items and she purchases a pair of running shoes on clearan
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Answer:

Total discount = $39.50

                  or 46.47 %

Step-by-step explanation:

First we need to figure out what she will pay for the shoes.  She is getting 30 percent off the 65 dollars.

Discount = price * percent off

                = 65*.3

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The cost of her shoes is the price minus the discount.

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To find the total discount, take the original price and subtract the final cost.

Total discount = 85-45.50

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To find the total percent discount, we use the formula

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                                             = 39.5/85*100

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4 0
3 years ago
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