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A triangle has three angles that measure 15 degrees, 85 degrees and (4x - 20). What is the value of x?

A triangle has three angles that measure 15 degrees, 85 degrees and (4x - 20). What is the value of x?
asked 69.4k views
4 votes
A triangle has three angles that measure 15 degrees, 85 degrees and (4x - 20). What is the value of x?

asked
User Yubelkis
by
7.5k points

1 Answer

7 votes
180=15+85+(4x-20)
180-15-85=4x-20
80=4x-20
4x-20=80
4x=80+20
4x=100
x=100/4
x=25
answered
User Amin Abdolrezapoor
by
7.7k points
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