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What is the measure of angle B in this triangle?

Enter your answer in the box.

What is the measure of angle B in this triangle? Enter your answer in the box.-example-1
User Til
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1 Answer

25 votes
25 votes

Answer:

Explanation:

First, you add the degrees available to you, next, you need to count the variable and add them together, in this case, your problem should show, 40+20-30 for your degrees, which is 30 degrees. Next, you have an "x" and a "2x," therefore you add them together to get 3x. After doing this, you get to your 2-step equation, which should look like 30 + 3x = 180. You get 180 because that is the length of the triangle, it should always be 180. You can now start by subtracting 180 - 30, we switch the + and - when doing the first part. Now, you should have gotten, 150, with 150 you can divide it by 3, you divided by 3 because you switch the division and the multiplication, now you do 150 divided by 3, which is 50. YOUR ANSWER IS: x = 50.

User IceArdor
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