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kondaur [170]
3 years ago
14

Which expressions are equivalent to 2(b+3c)?

Mathematics
2 answers:
Rina8888 [55]3 years ago
6 0

Answer:

B. (b+3c)+(b+3c)

C. 2(b)+2(3c)

Step-by-step explanation:

we have

2(b+3c)

Distribute the number 2

2(b+3c)=2b+2(3c)=2b+6c

Verify each case

case A) 3(b+2c)

distribute the number 3

3(b+2c)=3b+3(2c)=3b+6c

3b+6c \neq 2b+6c

therefore

Choice A is not equivalent to the given expression

case B) (b+3c)+(b+3c)

Combine like terms

b+3c)+(b+3c)=(b+b)=(3c+3c)=2b+6c

2b+6c= 2b+6c

therefore

Choice B is equivalent to the given expression

case C) 2(b)+2(3c)

Multiply both terns by 2

2(b)+2(3c)=2b+6c

2b+6c= 2b+6c

therefore

Choice C is equivalent to the given expression

horsena [70]3 years ago
5 0

Answer:

B and C

Step-by-step explanation:

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liraira [26]

Answer:

9

Step-by-step explanation:

I would guess it looks like this - if not then tell me

\frac{18}{ \frac{2 \times 3}{5 - 2} }

2×3=6

5-2=3

Then there's only

\frac{18}{ \frac{6}{3} }

Which is equal to

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3 years ago
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solmaris [256]

Answer:

A) 83 km/ hour

B) 2/7 penalties / game

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D) 9 donuts / box

Step-by-step explanation:

A)

For this question they are asking for the distance traveled in 1 hour.

Since 747km was travelled in 9 hours, we divide 747 by 9 to find the distance travelled in 1 hour

747 ÷ 9 = 83

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D)

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We can solve it two ways, we´ll do it via physics:
We know that:
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Math way:
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Answer:

Step 1: area is base × height

Step 2: 36cm2

Step-by-step explanation:

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Hope this helps :)

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