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olga nikolaevna [1]
4 years ago
15

What is -5(7x + 2) =200

Mathematics
2 answers:
blondinia [14]4 years ago
3 0
Your answer is going to be X=-6

olchik [2.2K]4 years ago
3 0

Answer:

x = 15.7

Step-by-step explanation:

-5(7x + 2) = 200

1) According to PEMDAS, solve/combine like terms within the parenthesis first; however, since we can't do that, distribute -5 to 7x and +2:

-35x - 10 = 200

2) Get x by itself by dividing both sides by -35:

-35x - 10        200

_______  = _____

-35                   -35

x - 10 =  5.7

3) Get x by itself by adding 10 to both sides:

x - 10 + 10 = 5.7 + 10

x = 15.7

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Step-by-step explanation:

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3 years ago
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kolezko [41]

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Step-by-step explanation:

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In tennis, a first serve can be an ace, a fault, or it can be returned. In one match, a tennis player hit 24 aces, which was 25
Anastaziya [24]

Answer:

16 faults

Step-by-step explanation:

<u><em>The correct question is</em></u>

In tennis, a first serve can be an ace, a fault, or it can be returned. In one match, a tennis player hit 24 aces, which was 2/5 of all her first serves. If 1/3 of her first serves were returned, how many of the tennis player's first serves were faults?

Let

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z ---> the number of first services faults

we know that

The number of aces plus the number of returned plus the number of faults must be equal to the number of all her first services

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step 1

Find out the number of all her first servers

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24=\frac{2}{5}x

Solve for x

x=24(5)/2\\x=60\ first\ services

step 2

Find out the number of first services returned

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substitute the value of x

y=\frac{1}{3}(60)=20\ returned

step 3

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we have

x=60\\y=20

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Answer:

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