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3 years ago

12

How many hours did it take him to finish the project?

1 answer:

EleoNora [17]3 years ago

8 0

First, find 20% of 5 hours. 20% is also 1/5 of something, and 1/5 of 5 is 1.
Multiply 5 by 3 for the 300%, getting 15 hours, and add 1 for the 20%.
He spent 16 hours on the project. Hope this helps!

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Firlakuza [10]

This seems like a right triangle problem.

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So, the equation is $4^{2} +x^{2} =14^{2}$ .

Solve for x:

16+x^{2}= 196

x^{2}= 196-16

x^{2}= 180

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nevsk [136]

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Answer:

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