The Hewitt family plans to expand their square pool. Each side of the original pool will be increased by 4 meters, and the new total area of the pool will be 361 square meters. Find the length of each side of the original pool.

a. 16 meters
b. 15 meters
c. 19 meters
d. 12 meters

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

answer: i don't understand. what are the options

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3.how is solving radical equations different than solving linear equations?

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$649.60

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