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In the triangle, suppose that m
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In the triangle, suppose that m

User Michael Barker
by
4.4k points

1 Answer

10 votes

Answer:

12

Explanation:

angle E is 90º so the other two angles must sum to 90º

4x-15+3x+21=90

7x+6=90

7x=84

x=12º

m∠C=4(12)-15=48-15=33º

m∠D=3(12)+21=36+21=57º

User Dima Dorogonov
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