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I need help with this.

asked Nov 20, 2021 146k views

1 vote

I need help with this.

Mathematics
high-school

Dan Nestor asked

by Dan Nestor

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1 Answer

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Answer:

$x + (3x - 9) = 5x - 30 \\ x + 3x - 9 = 5x - 30 \\ 4x - 9 = 5 x - 30 \\ - 9 + 30 = 5x - 4x \\ 21 = x \\ so..value \: of \: x \: is \: 21 \\ so. \\ <ACD = 5 * 21 - 30 = 105 - 30 = 75° \\ < ACB = 180° - 75° = 115°$

<ACB = 105°

it is correct✅ ans.

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plazzz mark is as a brilliant ans

Omid Mohebbi answered Nov 24, 2021

by Omid Mohebbi

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it is correct✅ ans.

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