Question

I need help !!!!!!!!!!!!!!!

Answer 1

Because
`\angle A` and
`\angle B` are alternate exterior angles, this means they congruent or equal to each other.

Therefore, we can say
`5x-15 = 2x+21` and use this equation to solve for x.

`5x-15 = 2x+21`

`5x = 2x+36`

`3x = 36`

`x = 12`
So x is equal to 12. After finding this, we can now go back to the equation for
`\angle B` and plugin x to solve it.

`\angle B = 2x +21`


`\angle B = 2(12) +21`

`\angle B = 24 +21`

`\angle B = 45`
Therefore,
`\angle B` is equal to 45 degrees.

Answer 2

Angle B= 45 degrees
Angle A = 45 degrees

A and B are congruent since they are alternate exterior angles
5x-15 = 2x +21
5x = 2x +36
3x=36
X=12
B)
2x12+21 = 45
A)
5x12-15 =45