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3 years ago

A rectangle with a width of 9 ft. and a length of 13 ft. is the base of a 30 ft. tall pyramid. What

Mathematics

1 answer:

natta225 [31]3 years ago

3 0

3,510

913=117
11730=3,510

3,510

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If (x + 2) is a factor of x2 - 6x2 + kx + 10, k =

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Answer:

10.7

Step-by-step explanation:

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2 years ago

In a study, 8 people ate a total of 1,312 pounds of potatoes in 2 years.

cricket20 [7]

Answer:

83.125 pounds of potatoes

Step-by-step explanation:

1. Divide 1,312 by 2

1,312/2 = 665

This means that in 1 year 8 people ate 665 pounds of potatoes.

2. Divide 665 by 8

665/8 = 83.125

This means that in 1 year 1 person ate 83.125 pounds of potatoes.

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3 years ago

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2 years ago

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Please help me <br>why - 9/5-1=-14/5

Jobisdone [24]

Answer:

Step-by-step explanation:

Because you have to take the L.C.M ,

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3 years ago

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B) The number of volume of a cylinder is half of its number of the total surface area.

faust18 [17]

Answer:

$V=179.6cm^3$

Step-by-step explanation:

the volume of a cylinder is given by:

$V=\pi r^2h$

where r is the radius and h is the height.

and the surface area:

$SA=2\pi r^2+2\pi rh$

the first term is the area of the circles and the second term is the area of the body.

since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:

$V=\frac{1}{2}SA$

substitutig the equivalent expressions on each side:

$\pi r^2 h = \frac{1}{2} (2\pi r^2+2\pi r h)$

and we simplify and solve for the height (since is the value we don't know of the cylinder):

$\pi r^2 h = \pi r^2+\pi r h\\\pi r^2h-\pi rh=\pi r^2\\h(\pi r^2-\pi r)=\pi r^2\\h=\pi r^2/(\pi r^2-\pi r)$

we substitute the value of the radius $r=7cm$ , and we get:

$h=\pi (7cm)^2/(\pi (7cm)^2-\pi (7cm))\\h=153.938/(153.938-21.991)\\h=153.938/131.947\\h=1.1666cm$

thus the volume is:

$V=\pi r^2h$

$V=\pi (7cm)^2(1.1666cm)\\V=179.6cm^3$

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2 years ago

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