Angle 3 and angle 4 are supplementary. Angle 3 equals 5x + 15 and angle 4 equals 10x. What does x equal

asked Apr 1, 2022 192k views

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Answer:

X = 11

Explanation:

since the angles are supplementary that means their sum is 180

$5x + 15 + 10x = 180 \\ 15x + 15 = 180 \\ 15x = 180 - 15 \\ 15x = 165 \\ x = 165 / 15 \\ x = 11$

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