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Varvara68 [4.7K]
2 years ago
15

Which expression is equivalent to 42−14

Mathematics
1 answer:
Mamont248 [21]2 years ago
5 0

Answer:

4(x - 3)

Step-by-step explanation:

When you put brackets around a binomial (has 2 parts separated by a plus / - sign), you must take out a common factor from both terms separated by the +  or - sign

A only has the 4 taken away from the x. The answer is not A

B has the 3 removed from the 12, not the x, so B is not the answer.

C that's the answer.

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4. Find the slope of the line through the points (-6, 4) and (8,-4). m =​
Aleksandr-060686 [28]

Answer: Hope it helps :)

<u>-4</u>

7

Step-by-step explanation:

You have to use the formula <u>y2-y1</u>

                                                x2-x1

So <u>-4-4</u>

     8--6

-4-4= -8

8--6= 14 (two negative signs become a positive sign)

You have -8 over 14

If you simplify it's -4/7 or <u>-4</u>

                                         7

4 0
2 years ago
Read 2 more answers
Out of the 25 students in Mrs. Coulter's class, 15 are girls. In the school there are 390 boys. If the ratio of boys to students
GREYUIT [131]

Answer:

975 students

Step-by-step explanation:

This is a dense question. Let's look at it piece by piece:

1. The ratio of boys to students in the class is 10/25. If there are 25 students and 15 girls, that leaves 10 boys.

2. The question says that the ratio is in proportion of boys to total students in the school. "In proportion" in this case means that if we convert 10/25 to a fraction with numerator 390, the denominator is the amount of students in school.

3. 10x39=390. What you do the numerator you must do to the denominator: 25x39=975.

4. This means 975 students go to the school.

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2 years ago
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How can you the unit rate on a graph that goes through the origin ?
Nonamiya [84]
It must be about the origin in order to do that
5 0
3 years ago
What is the supplementary angle of these:<br> - 14 degrees<br> - 109 degrees
DiKsa [7]

Answer:

456

Step-by-step explanation:

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3 years ago
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What is the square footage of a 13 foot by 14 foot circle?
sineoko [7]

{169}ft^{2}


3 0
3 years ago
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