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The measures of two complementary angles are (3y − 1)° and (4y + 7)°. Determine the value of y. (Type number only)

Sagot :

Answer:

y = 12

Step-by-step explanation:

Complementary angles sum to 90 , so

3y - 1 + 4y + 7 = 90

7y + 6 = 90 ( subtract 6 from both sides )

7y = 84 ( divide both sides by 7 )

y = 12

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