Okay I actually don't get this one. I tried it but the answer I got wasn't a choice. LOL.
Again SORRYYY :)

C) 60

Step-by-step explanation:

70 + x + 54 + x + 64 = 180

188 + 2x = 180

2x = -8

x = -4

A = x+64

   = -4 + 64

   =60

The answer is C.

Step-by-step explanation:

Given that the total angles in a triangle is 180°. So in order to find x, you have to add up all the expressions and make it equals to 180° :

70 + x + 54 + x + 64 = 180

2x + 188 = 180

2x = 180 - 188

2x = - 8

x = - 8 ÷ 2

x = - 4

Next, you have to find angle of A :

A = x + 64

A = - 4 + 64

A = 60

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2

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