Question

I don’t know how to solve this, please help !

Answer 1

Answer:

Angle B= 150

Step-by-step explanation:

8x-10=3x=90

5x-10=90

5x=100

x=20

plug 20 into angle B's equation

3(20)+90

60+90

150=B

Answer 2

The trick here is realizing that both angles equal each other. There's a rule for this, but generally you can tell just by looking.

So what we can do is set these two equations equal each other, solve for x, and then plug x into angle B's original equation.

8x - 10 = 3x + 90

5x = 100

x = 20

now we plug that x into angle B

3x + 90

3(20) + 90

60 + 90

150

Angle B = 150°