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2 years ago

P=5(q-2r)/r solve for r

Mathematics

1 answer:

Pavel [41]2 years ago

6 0

Answer:

r = 5q / (p + 10)

Step-by-step explanation:

p = 5(q - 2r)/r

multiply both sides by r

pr = 5(q - 2r)

distribute

pr = 5q - 10r

add 10r to both sides

pr + 10r = 5q

Factor out r

r(p + 10) = 5q

divide both sides by p + 10

r = 5q / (p + 10)

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What is the radius of a circle with a diameter of 45 miles?

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Answer:

r = 22.5

Step-by-step explanation:

R = D/2 = 45/ 2 = 22.5

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3 years ago

Read 2 more answers

Let f(x) = x^2 + 6x.

rusak2 [61]

Answer:

(A) The slope of secant line is 18.

(B) The slope of secant line is h+16.

Step-by-step explanation:

(A)

The given function is

$f(x)=x^2+6x$

At x=3,

$f(3)=(3)^2+6(3)=27$

At x=9,

$f(9)=(9)^2+6(9)=135$

The secant line joining (3,27) and (9,135). So, the slope of secant line is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

$m=\dfrac{135-27}{9-3}=18$

The slope of secant line is 18.

(B)

The given function is

$f(x)=x^2+6x$

At x=5,

$f(5)=(5)^2+6(5)=55$

At x=5+h,

$f(5+h)=(5+h)^2+6(5+h)=h^2 + 16 h + 55$

The secant line joining (5,55) and $(5+h,h^2 + 16 h + 55)$ . So, the slope of secant line is

$m=\dfrac{h^2 + 16 h + 55-55}{5+h-5}$

$m=\dfrac{h^2 + 16 h }{h}$

$m=h+16$

The slope of secant line is h+16.

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3 years ago

The length of a rectangle is (x - 9) feet. Its width is x feet. Write an expression you could use to find the perimeter

steposvetlana [31]

Answer:

The expression for the perimeter of the rectangle is: $P = 4x - 18$

Step-by-step explanation:

Perimeter of a rectangle:

A rectangle has length l and width w. It's perimeter is given by:

$P = 2(l + w)$

In this question:

$l = x - 9, w = x$

$P = 2(x - 9 + x) = 2(2x - 9) = 4x - 18$

The expression for the perimeter of the rectangle is: $P = 4x - 18$

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2 years ago

For what value of x is the rational below equal to zero x-4/(z+5)(x,

Tcecarenko [31]

8/(z+4)(x, is the answer hope it helps

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2 years ago

(-38)÷ ------- =not defined.fill in the blanks please fill the answer

Damm [24]

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▹ Answer

∞

▹ Step-by-Step Explanation

The answer is ∞ because anything divided by infinity is not defined.

Hope this helps!

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Brainliest is greatly appreciated!

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3 years ago