Question

(NEED ASAP) what is the measure of ∠b?

Answer 1

This a questions about angles! Let's see how to solve it:

In this figure, we have a straight angle. A straight angle is a 180 degree angle. In this case, the straight angle is the sum of 40° and b.

So, we can do an equation and solve it. See below:

`40 + b = 180\\b = 180 - 40\\b = 140`

Therefore, the measure of
`\angle b` is 140°.

Answer 2

b= 140 degrees

Explanation:

In order to find it, we must know that a lin has an angle of 180.

So woth that, just used that angle to make an equation of

"40+b=180"

Just subtract 40 on both sides and you get

"b=140"

:D