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2 years ago

Which expressions are equivalent to 9b?

Mathematics

2 answers:

djverab [1.8K]2 years ago

6 0

Answer:

A. b+2(b+2b)

b + 2b + 4b = 7b

B. 3b + b = 4b

C. 2(2b) = 4b

None of them are equal to 9b

sergiy2304 [10]2 years ago

5 0

Answer:

$\fbox {None}$

Step-by-step explanation:

A

b + 2(b + 2b)
b + 2(b) + 2(2b)
b + 2b + 4b
7b

B

3b + b
4b

C

2(2b)
4b

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3 years ago

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Step-by-step explanation:

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3 years ago

The vertical angle to the top of a flagpole from point A on the ground is observed to be 37°11'. The observer walks 17 m directl

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Answer:

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Step-by-step explanation:

Let height of flagpole=h

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We have to find the approximate height of the flagpole.

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$\frac{CD}{DA}=tan\theta=\frac{Perpendicular\;side}{Base}$

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$h=DA(0.759)$

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$0.482=\frac{h}{DA+17}$

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Substitute the value

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$8.194=0.759DA-0.482DA$

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Substitute the value

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3 years ago