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3 years ago

ZA and ZB are complementary angles. If mZA = (7x + 23)° and

Mathematics

1 answer:

Marat540 [252]3 years ago

5 0

Answer:

ZB= 39°

Step-by-step explanation:

complementary angles are angles that add up to equal 90

equation: 7x + 23 + 5x + 19 = 90

add like terms: 12x + 42 = 90

subtract 42 from both sides: 12x = 48

divide both sides by 12: x = 4

plug in the value of x to the equation for ZB: 5(4) + 19

simplify: ZB= 39°

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