3 years ago

Multple step percent problems

Mathematics

1 answer:

melamori03 [73]3 years ago

3 0

Look it up online because you don't have a question

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Right and solve an equation to find the number n.four times a difference of a number and seven is 12

amm1812

For this case we must propose an algebraic expression associated with:

"four times a difference of a number and seven is 12"

So we have to:

Four times a difference of a number and seven is represented as: $4 (n-7)$

So we have the expression is:

$4 (n-7) = 12$

We apply distributive property to the terms within parentheses:

$4n-28 = 12$

We add 28 to both sides:

$4n = 12 + 28\\4n = 40$

We divide between 4 on both sides:

$n = \frac {40} {4}\\n = 10$

Answer:

$n=10$

5 0

4 years ago

What is the value of p? A. 45 B. 35 C. 55 D. 125 wouldn’t it be 35?

Verdich [7]

That is right it's 35degree.

7 0

4 years ago

Can someone help me 1 or 4

sleet_krkn [62]

Answer:

No. 1: y = 90 (vertically opposite angles)

Also, x = 9. To find x, we'll have:

$3x + 7 + 56 + 90 = 180 \\ (sum \: of \: angles \: on \: a \: straight \: line) \\ 3x + 153 = 180 \\ 3x = 180 - 153 \\ 3x = 27 \\ \frac{3x}{3} = \frac{27}{3} \\ x = 9.$

No. 4: y = 62 (vertically opposite angles)

Also, x = 12. To find x, we have:

$5x = 60 \\ \frac{5x}{5} = \frac{60}{5} \\ x = 12.$

8 0

3 years ago

one month Laura rented 3 movies and 2 video games for a total of 22$. The next month she rented 5 movies and 6 video games for a

jekas [21]

Step-by-step explanation:

24$

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3 years ago

Use the diagram to solve for x Hint: set them equal to each other * Your answer

nadya68 [22]

Answer:

x = 9

Step-by-step explanation:

7x - 1 = 62

add on to each side and you get 7x = 63

divide both sides by seven to get x = 9

5 0

3 years ago

Read 2 more answers