3 years ago

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

Mathematics

1 answer:

NNADVOKAT [17]3 years ago

8 0

Answer:

X = 11

Step-by-step explanation:

since the angles are supplementary that means their sum is 180

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

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