X=4y,2x+y=18 solve by substitution show all work

1 answer:

7 0

Here is the math, did it on paper, sorry it’s blue. just add parenthesis around the x in the second equation and add what x equals. then solve as PEMDAS.

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The ratio of the number of student in mr. Moore’s class compared to the number of student in miss Henry’s class is 5:4. The rati

Ahat [919]

Answer:

10:9

Step-by-step explanation:

First ratio is 5:4. 4 is equal to Henry class

If you múltiply the ratio by 2 you get

10:8, This ratio can be compared because now Henry class has 8

2(5:4)

10:8

8:9

Meaning that the answer is 10:9

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If Jimmy's new cell cost him $49.99 with a 75% discount, then $49.99 is 100%−75%=25% of the original price.

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Lubov Fominskaja [6]

I observe that 5 raised to any whole-number power
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8 0

3 years ago

Can i please have help thanks.

Dmitrij [34]

Answer:

$q = 2(3r + 8)$

Step-by-step explanation:

There are two variables, q and r in the expression given. To make r the independent variable, it simply means, make q the subject of the formula, so that variable q would be dependent on variable r. As r changes, q changes also.

Thus,

$q - 10 = 6(r + 1)$