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2 years ago

A cylinder has a diameter of 10 inches and a height of 18 inches what is the volume of the cylinder

Mathematics

1 answer:

Yuliya22 [10]2 years ago

7 0

Answer:

1413.72

Step-by-step explanation:

Please mark brainlest

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the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect

Leni [432]

Answer:

Step-by-step explanation:

let : x the length and y the width .... ( x > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

subsct in (1) : 2( (7/4)y +y ) =55

(7/2)y +2y =55

multiply by 2

7y +4y = 110

11y = 110

y = 10

x = (7/4)(10)

x = 35/2

4 0

3 years ago

How to solve -2(x+3)=8

Shtirlitz [24]

-2(x + 3) = 8

Multiply -2 with x and 3

-2x -6 = 8

Now add 6 to both sides

-2x -6 = 8
+6 +8

-2x = 16

Lastly divide -2 from both sides to find x

-2x = 16
—— —-
-2x -2x

X = -8

5 0

3 years ago

Read 2 more answers

4/15 is equal to what

Scilla [17]

<span>Some equivalent fractions of 4/15 are: 8/30 = 12/45 = 16/60 = 20/75 = 24/90 Hope this helps</span>

8 0

3 years ago

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Find the diameter of the base of a right cylinder if the surface area is 128(pi) and the height is 12cm.

Gelneren [198K]

$d=2r\\
A=128 \pi \\
A=2 \pi r^{2} +2 \pi rh \\\\
2 \pi r^{2} +2 \pi rh = 128 \pi \\
2 r^{2} +2rh = 128\\
2 r^{2}+24r-128=0\\
r^{2}+12r-64=0\\
delta=400\\
r_{1/2} = -16/4 \\
r=4cm\\
d=8cm\\
$

Radius / diameter as a length cannot be negative, that's why '-16' is wrong.

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3 years ago

What is the solution to this equation

il63 [147K]

One equation is a multiple of the other, so you have an infinite solution set and for every x you pick you can find a matching y to fulfill both equations

$7x-3y=9\\
7x-9=3y\\
\frac{7x}{3}-3=y$

this forms a line and any of its points is valid in the equation

3 0

3 years ago

Read 2 more answers