Please.

Find BC. If AB = x, BC = 8x-4 and AC =77°.

91 1/9

Step-by-step explanation:

Because this is clearly a triangle, the total number of degrees all the angles add up to is 180 degrees. In this scenario, we have

Combining like terms, we have

Combining like terms again, we have

Subtracting 73 on both sides, we have

Dividing by 9 on both sides, we have

Plugging back into BC = 8x - 4, we have

Combining like terms, we have , which is

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

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