What is the answer to this
2 answers:
Hello!
The angle is a right angle, which measures 90°.
3x + x = 4x
Angle = 4x + 10 = 90
Switch that around
90 - 10 = 4x
90 - 10 = 80
80 = 4x
Divide by 4

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Hello !
The angles x° and (3x+10)° result a right angle,because the first and the third line are perpendicular.
The measure of a right angle is 90°
So : x° + (3x+10)° = 90
x + 3x + 10 = 90
4x + 10 = 90 | -10
4x + 10 - 10 = 80
4x = 80 | : 4
4x:4 = 80:4
x = 20°
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