ZA and ZB are vertical angles. If m A = (8x – 20)° and m B = (3x – 5)º,

Mathematics

1 answer:

kobusy [5.1K]3 years ago

4 0

Answer:

x=11

Step-by-step explanation:

Vertical angles are congruent, so m∠A = m∠B.

4x+8 = 5x-3

Subtract 5x from both sides.

-1x+8=-3

Subtract 8 from both sides to isolate the variable.

-1x=-11

Divide both sides by -1 to solve for x.

x=11

Plug in 11 for x into m∠A=(4x+8)=(4(11)+8)=(44+8)=52.

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