Which sequence of transformations produces a'b'c' from abc?
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a translation up 3 and then a 90° counterclockwise rotation about the origin
a 90° counterclockwise rotation about the origin and then a translation up 3

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

there will be 35 boys in each team. : )

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step-by-step explanation: