This is the more to follow.

Mathematics

1 answer:

Nataliya [291]3 years ago

3 0

$\frac{6q}{20(q + r)}$

You can simplify this expression by dividing the top and bottom by 2

$\frac{6q}{20(q + r)}$ becomes $\frac{3q}{10(q + r)}$

$\frac{3q}{10(q + r)}$ is your answer

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1/2r+2(3/4r-1)=1/4r+6

bixtya [17]

I think r should equal 32/7

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3 years ago

What is solution 7x+5y=-24 and 4x+y=42?

LenKa [72]

7x+5y=-24 (1)
4x+y=42 (2)

multiply equation (2) by 5 to get
20x+5y=210 (3)

then calculate (3)-(2) which gives you
13x=234 hence x=18
then substitute for x in either equation to get y=-30

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3 years ago

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VMariaS [17]

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No, the graph does not represent a proportional relationship. It is a straight line, but it does not intersect the point (0, 0). ... It's not proportional because the line does not cross through the origin. Therefore the ratio of x to y will be different for two different points on the line.

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3 years ago

Simplify these expressions

Xelga [282]

$\frac{10a}{2} \\ \\ 5a \\ \\$

The answer is: 5a

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The answer is: 6

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The answer is: 2c

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3 years ago

Adam is hired at a salary of $50000 per year but will earn an annual increase of 2.5% per year. Brock is hired at the same time

nadezda [96]

A=50000(1.025^t), B=50000+3000t

A(10)=$64004.23, B(10)=$80000

So Brock will be earning $15995.77 more than Adam in the tenth year.

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3 years ago