Question

I don't get it. Explain please!

Answer 1

20

Explanation:

Complementary angles add up to 90

x + 3x + 10 = 90

4x = 80

x = 20°

Answer 2

Answer is x= 20 degrees.

Given lines are perpendicular

therefore sum of the angels = 90 degrees

Explanation:

`x + 3x + 10 = 90 \\ 4x + 10 = 90 \\ 4x = 90 - 10 \\ 4x = 80 \\ therefore \: x = 20 \: degrees`

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