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3 years ago

HELP ASAP BRAINLIEST FOR FIRST CORRECT ANSWER In triangle ABC, m∠A=(5x−10)∘, m∠B=(12x)∘, and the exterior angle at C is (16x)∘.

Mathematics

2 answers:

Sever21 [200]3 years ago

7 0

Answer:

exterior ∠C = 160

Step-by-step explanation:

Exterior angle property: Exterior angle equals the sum of opposite interior angles.

∠A + ∠B = exterior ∠C

5x - 10 + 12x = 16x {Combine like terms}

17x - 10 = 16x {Add 10 to both sides}

17x = 16x+ 10 {Subtract 16x form both sides}

17x - 16x = 10

x = 10

exterior ∠C = 16x = 16 * 10 = 160

kirill [66]3 years ago

5 0

Answer:

160

Step-by-step explanation:

5x-10+12x=16x

17x-16x=10

x= 10

exterior angle at C = 16x= 16×10 = 160°

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