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What is the answer to the following: (reference the photo for answer)
a=

Answer options are:

4

6

9

Please show explanation so that I better understand how to get the answer next time! Thank you.

What is the answer to the following reference the photo for answer a Answer options are4 6 9Please show explanation so that I better understand how to get the a class=

Respuesta :

Answer:

9

Step-by-step explanation:

To calculate c from the first right angle triangle,

C2 = 36 + 16

C = sqrt(52)

To calculate a from the bigger right angle triangle,

B2 + 52 = (a + 4)2

B2 - a2 = -36 + 8a

A2 + 36 = B2

Solving both by elimination,

A = 72/8

=9

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