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blagie [28]
3 years ago
14

Solve for x. Please help quick, it’s my last question for my test

Mathematics
1 answer:
Sladkaya [172]3 years ago
3 0

Answer:

x = 9

Step-by-step explanation:

84 + (7x + 5) + (180 - (17x-1)) = 180

84 + 7x + 5 + (181 - 17x) = 180

270 + (-10x) = 180

90 = 10x

x = 9

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I have a goal of getting exactly $100. But I have to pay a tax of 10%. How much money do I need to get in order to have exactly
frosja888 [35]
<h3>Answer:  $111.11</h3>

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Explanation:

Let's say you earn x dollars.

You pay 10% tax on that, which means you pay 0.10x dollars.

This would drop to x-0.10x = 0.90x which is the amount earned after tax.

So you pay 10% of what you earn, and keep 90% of the rest.

Set this equal to the target $100 you want and solve for x.

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x = 100/0.90

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Notice that 10% of this is 0.10*x = 0.10*111.11 = 1.11 when rounding to the nearest penny. So you'll pay $1.11 in tax. Therefore, you'd have x-0.10x = 111.11 - 1.11 = 100 left over. So the answer checks out.

7 0
3 years ago
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Step-by-step explanation:

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8 0
3 years ago
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