Answer:
x = 20
Step-by-step explanation:
(4x - 10) and x are complementary angles, which means that adding them together would equal 90
(4x - 10) + x = 90
5x - 10 =90
+ 10 + 10
5x = 100
[tex]\frac{5x}{5} = \frac{100}{5}[/tex]
[tex]x = 20[/tex]
4x - 10 + x = 90
simplify
divide both sides by 5
hope this helps ! !
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