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DiKsa [7]
2 years ago
8

What is the answer to -10y+90=80​

Mathematics
2 answers:
photoshop1234 [79]2 years ago
7 0
My answer would be y=1 he’s right
Elza [17]2 years ago
3 0

Answer:

y=1

Step-by-step explanation:

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Person A can paint the neighbor's house 5 times as fast as Person B. The year A and B worked together, it
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Answer:

Person A paints the house in 12 days.

person B paints the house in 60 days.

Step-by-step explanation:

The together rate is the sum of each separate rate.

Person A can paint the neighbor's house 5 times as fast as Person B.

This means that the rate of person A is 1/x, and the rate of person B is 1/5x.

The year A and B worked together, it took them 10 days.

This means that:

\frac{1}{x} + \frac{1}{5x} = \frac{1}{10}

Multiplying everything by 10x

10 + 2 = x

x = 12

This means that:

Person A paints the house in 12 days.

person B paints the house in 60 days.

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3 years ago
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