Respuesta :

jcherry99

Answer:

Step-by-step explanation:

Use a^2 + b^2 = x^2

a = 15

b = 20

15^2 + 20^2 = x^2

225 + 400 = x^2

x^2 = 625       Take the square root of both sides.

√x^2 = √625

x = 25

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