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3 years ago

Help please!!!!!! 12-13 8th grade math!!!

Mathematics

1 answer:

marin [14]3 years ago

5 0

Answer:

12.

m∠ACB = 180° - 58° - 78° = 44°

m∠DCE = 180° - 85° - 60° = 35°

m∠BCD = 180° - 44° - 35° = 101°

13.

Base on the picture, we know that:

x° + 2x° + 3x° = 180°

6x° = 180°

x° = 180° ÷ 6 = 30°

=> m∠K = 2x° = 2 × 30° = 60°

=> m∠L = 3x° = 3 × 30° = 90°

=> m∠KML = x° = 30°

m∠LMN = 60° + 90° = 150°

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2 years ago

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Answer:

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Step-by-step explanation:

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y ---> the width of the rectangular volleyball court

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substitute equation B in equation A

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