Respuesta :

pbdash2010

Answer:

umm, a=3 I believe?

Step-by-step explanation:

4²=16, and 5²=25 so 25-16=9 and the square root of 9 is 3

361410

Answer:

a = 3

Step-by-step explanation:

a^2 + 4^2 = 5^2

Step 1 square all exponents

a^2 + 16 = 25     4*4 = 16 and 5*5 = 25

Step 2 subtract 16 from both sides

a^2 +16 = 25

      -16    -16

a^2 = 9

Step 3 square root both sides

a = 3       square root of 9 is 3

Hope I helped!!