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Reil [10]
1 year ago
7

Select each expression that is equivalent to 3(n + 6). Select all that apply. (ANSWER ASAP)

Mathematics
2 answers:
rusak2 [61]1 year ago
7 0

Answer:

Step-by-step explanation:

This expression involves the <u>distributive property. </u>In the distributive property, there is a number followed by an equation in parenthesis.

3(n+6)

To simplify it, you have to multiply the first number by each number in the parenthesis, separately:

3(n+6)

3n + 3(6) or 3xn + 3x6 (same thing)

3n+18

Finally, we can check the other 4 choices to double check.

A. 3n+6 (wrong)

B. 2(n+6) + (n+6)=

2xn + 2x6 + n + 6

2n + 12 + n + 6

combine like terms, or all the terms that are the same. start with the Ns, then the numbers:

2n+n + 12+6

3n+18

C. 2(n+6)+n= 2n+2(6) +n = 2n+12+n= 2n+n+12= 3n+12

D.3n+18

E. 2n+2+n+4= 2n+n+2+4= 3n+6

Answer= B and D

hope this helps :))

Salsk061 [2.6K]1 year ago
4 0

Answer: 3n+18 bcz of the distributive property

Step-by-step explanation:

b & d

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The measure of each exterior angle is 60° and the polygon has 6 sides ⇒ 4th answer

Step-by-step explanation:

In a regular n-side polygon:

  • All sides are equal in lengths
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∵ The measure of an interior angle of a regular polygon is 120°

∵ The sum of interior angle and exterior angle at a vertex = 180°

∴ The measure of each exterior angle = 180 - 120

∴ The measure of each exterior angle = 60°

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- Substitute the measure of the exterior angle by 60

∴ 60=\frac{360}{n}

- By using cross multiplication

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- Divide both sides by 60

∴ n = 6

∴ The polygon has 6 sides

The measure of each exterior angle is 60° and the polygon has 6 sides

Learn more:

You can learn more about polygons in brainly.com/question/6281564

#LearnwithBrainly

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3 years ago
The length of three boards added together is 7.2 meters. The second board is twice the length of the first. The third board is t
Salsk061 [2.6K]

Answer:

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Step-by-step explanation:

Board 1 = x

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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A = 1/2(31.36)(5π/6)

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