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MArishka [77]
3 years ago
8

1. Solve the system of equations: 2x + y = -2 5x + 3y = -8

Mathematics
1 answer:
Fantom [35]3 years ago
8 0

Answer: x=2 and y=−6

Step-by-step explanation: 2x+y=−2, 5x+3y=−8

2x+y=−2

2x+y+−2x=−2+−2x

y=−2x−2

5x+3y=−8

5x+3(−2x−2)=−8

−x−6+6=−8+6

−x=−2

−x /−1 = −2 /−1

x=2

y=−2x−2

y=(−2)(2)−2

y=−6

x=2 and y=−6

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Answer:

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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

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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

                                              = 46.47%

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