Register
Need help! (For 50 points)
51.1k views
0 votes
Need help! (For 50 points)

Need help! (For 50 points)-example-1
User AlanSTACK
by
7.3k points

1 Answer

7 votes

Answer:

  • 168°

------------------------------

Supplementary angles add up to 180°:

  • m∠A + m∠B = 180°

Substitute and solve for x:

  • x - 9 + 7x + 21 = 180
  • 8x + 12 = 180
  • 8x = 168
  • x = 21

Find the measure of ∠B:

  • m∠B = (7*21 + 21)° = 168°
User Inerte
by
9.4k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
The cost of 5 similar digital cameras and 3 similar video cameras is 3213. Each video camera costs 4 times as much as each digital camera. John buys a digital camera and a video camera. How much does he
Link Copied!