Question

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Answer 1

Answer:

a=3

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2+b^2 = c^2 where a and b are the legs and c is the hypotenuse

a^2+4^2 = 5^2

a^2 +16 = 25

a^2 =25-16

a^2 = 9

Taking the square root of each side

sqrt(a^2) = sqrt(9)

a =3