57.3k views
10 votes
Analyze the diagram below and complete the instructions that follow.

find m
a.66
b.71
c.21
d.26

Analyze the diagram below and complete the instructions that follow. find m a.66 b-example-1
User Oerkelens
by
4.6k points

1 Answer

11 votes

Answer:

71°

Explanation:

  • 84+(2x-1)+(x+8)+(x+5)=360 [angles in a quadrilateral add to 360°]
  • 4x+96=360 [combine like terms]
  • 4x=264 [subtract 96 from both sides]
  • x=66 [divide both sides by 4]

So, angle A measures 66+5=71°

User Joshua Van Hoesen
by
4.2k points