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3 years ago

- 3 (n-3)-5 simplify the expression using distributive property please rnnn

Mathematics

1 answer:

Tju [1.3M]3 years ago

4 0

Distribute the “-3” to both n&-3 —> -3n+9 then your left with -5 and subtract 9-5

-3n+4

Hope this helps:)

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Evaluate the expression 2x-y for x=17 and y=12

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Answer:

The answer is 22.

Step-by-step explanation:

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3 years ago

Solve x + 5 = 10 thank you

jonny [76]

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Step-by-step explanation:

Step 1: Subtract 5 from both sides.

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2 years ago

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3 years ago

There were 25 runners competing in a race. The number of runners who finished ahead of Paula was one-third the number of runners

alexandr402 [8]

<u>Answer:</u>

7th Place

<u>Step-by-step explanation:</u>

Seeing as how the number of runners in front of Paula is $\frac{1}{3}$ the number of runners behind her,

Assign the number of people behind Paula to a variable:

# of people behind Paula = b, which means

# of people ahead of Paula = $\frac{1}{3}$ b

Use the variable to make an equation:

b (people behind Paula) + $\frac{1}{3}$ b (people ahead of Paula) + 1 (Paula) = 25

b + $\frac{1}{3}$ b + 1 = 25

Solve for b:

b + $\frac{1}{3}$ b + 1 = 25

b + $\frac{1}{3}$ b = 24

$\frac{4}{3}$ b = 24

b = 18

If there are 18 people behind Paula, there are $\frac{1}{3}$ * 18 people in front of her, which is 6; This puts Paula in 7th place.

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3 years ago