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J and M are base angles of isosceles trapezoid JKLM. If mJ = 20x + 9, and mM = 14x + 15, find mK. A. 151o B. 1o C. 29o D. 75.5o
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J and M are base angles of isosceles trapezoid JKLM. If mJ = 20x + 9, and mM = 14x + 15, find mK.

A. 151o
B. 1o
C. 29o
D. 75.5o

User Donn
by
8.0k points

2 Answers

6 votes

Answer: 151

Explanation:

User Somasundaram Mahesh
by
8.0k points
3 votes
20x + 9 = 14x + 15
6x = 6
x = 1

So base angles are 20 + 9 means 29 degrees. To calculate the m of angle k, subtract 29 from 180:

180 - 29 = 151 degrees.
hope it helps
User Skywind
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