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3 years ago

????????????????HELP

Mathematics

1 answer:

Dima020 [189]3 years ago

3 0

The answer is A.

Remember that distributing is a(b+c)= ab+ac
3(r-2)=
3*r + 3*-2=
3r-6

Final answer: A

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joja [24]

Answer:

a = 0, b = 7

a = 1, b = 6

a = 2, b = 5

a = 3, b = 4

a = 4, b = 3

a = 5, b = 2

a = 6, b = 1

a = 7, b = 0

Step-by-step explanation:

the sum of a and b must equal 7 because 4 x 7 = 28

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3 years ago

G=x-c/x. for x<br><br>how do yoy make this an equation for x? help

zzz [600]

1.
$\displaystyle \text{if }\quad G=x- \frac{C}{x} \\\\$

$x \neq 0$

Multiply both sides by x:

$\displaystyle Gx=x\bigg(x- \frac{C}{x}\bigg )\\\\Gx=x^2-C$

Subtract from both sides Gx:
$Gx-Gx=x^2-C-Gx\\x^2-Gx-C=0$

Then solve this equation:

$\displaystyle x^2-Gx-C=0\\\\x_{1,2}= \frac{G\pm \sqrt{G^2+4C} }{2}$

2.
$\displaystyle\text{if}\quad G= \frac{x-C}{x}$

$x \neq 0$

Multiply both sides by x:

$Gx=x-C$

Subtract from both sides Gx:

$x-C-Gx=0$

Then solve this equation:

$\displaystyle x-Gx-C=0\\x(1-G)=C\\x= \frac{C}{1-G}$

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3 years ago

A grocery store buys items and then applies a markup of 70%. What is the retail price of item that originally costs $10?

Art [367]

The answer you are looking for would be 3 dollars

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3 years ago

Read 2 more answers

If a line passes thru the points (4,5) and (2,9) the slope of this line is

Allisa [31]

Answer:

m=-2

Explanation:

If a line passes through the points (4,5) and (2,9): to calculate the slope, use the formula below:

$\text{Slope,m}=\frac{Change\text{ in y-axis}}{Change\text{ in x-axis}}$

Substituting the points, we have:

$\begin{gathered} m=\frac{9-5}{2-4} \\ =\frac{4}{-2} \\ =-2 \end{gathered}$

The slope of this line is -2.

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1 year ago

If your annual pay is $36,010, what is your biweekly pay based on 26 biweekly paychecks?

Anuta_ua [19.1K]

To get your bi weekly pay you would divide $36,010 by 26, seeing as bi weekly means you get payed every other week.
36,010 / 26 = $1,385
I hope this helps :)

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3 years ago