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3 years ago

Q=3(r+1)/r Make r the subject of the formula

Mathematics

1 answer:

DiKsa [7]3 years ago

8 0

Distribute the 3 to the parentheses. Q=3r+3/r

Next multiply both sides by r to get rid of the division sign.

Qr=3r+3

Subtract 3r on both sides and you get Qr-3r=3

Since both numbers have an r in it, we can factor out the r

r(Q-3)=3

Then we divide Q-3 on both sides

r=3 / (Q-3)

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Answer:

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Step-by-step explanation:

Use the slope formula to find the slope of a line given the coordinates of two points on the line.

The slope formula is:

m = $\frac{y{2}-y{1} }{x{2}- x{1} }$ = $\frac{y}{x}$

The coordinates of the first point represent x1 and y1. The coordinates of the second points are x2, y2.

Now let's fill in the formula with the points,

m = $\frac{8-4}{9-7}$

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Simplify,

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Therefore, the Equation of the line is y = 0.5x + 5.

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Step-by-step explanation:

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