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3 years ago

Can anyone help me on solving equations with rational numbers?

Mathematics

1 answer:

dangina [55]3 years ago

8 0

I'm learning the exact same thing so give me some question and I can see what I can do!

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What is the inverse of the function y = -8x + 15?

MrRa [10]

$y = -8x + 15\\ 8x=-y+15\\ x=-\dfrac{y-15}{8}\\\\ y^{-1}=-\dfrac{x-15}{8}$

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3 years ago

In the figure, point E is on line DG .

g100num [7]

Hello there.

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3 years ago

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Nat2105 [25]

The perimeter of a rectangle:P = 2 L + 2 W
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3 years ago

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What is the solution to the equation 1/3(x-2)=1/5(x+4)+2 ?

Airida [17]

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4 years ago

find the volume of the cone. either enter exact answer in terms of pi or use 3.14 for pi and round your final answer to the near

SCORPION-xisa [38]

Answer:

$6\pi u^3 = 18.8u^3$

Step-by-step explanation:

the information we have is:

the radius of the circle in the base: $r=3u$ (u for units)

and the height of the cone: $h=2u$

to find the volume we need the formula for the volume of a cone:

$V=\frac{\pi r^2h}{3}$

where r is the radius and h is the height.

Substituting the known values to find the volume:

$V=\frac{\pi (3u)^2(2u)}{3} \\\\V=\frac{\pi (9u^2)(2u)}{3}\\ \\V=\frac{18\pi u^3}{3}\\ \\V=6\pi u^3$

the volume in terms of $\pi$ is $6\pi u^3$

and if we substitute the value of pi: $\pi=3.14$ we get:

$V=6(3.14)u^3\\V=18.8u^3$

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4 years ago

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