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3 years ago

Eleven is 20% of___________

2 answers:

5 0

I think its 55 because 11 divided by .2 (20%) equals 55 then if you wanna check it then multiply 55 with .2 and you'd get 11.

stich3 [128]3 years ago

3 0

If you have 20% of an number you simply divide it by 5.
So if you divide a number by 5 and find eleven, it should look like:
x / 5 = 11
So it means x = 55

Hope this helps. :) Don't forget to choose brainliest answer please.

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if 10 800 cm2 of material is available to make a box with a square base and an open top find the largest possible volume of the

lubasha [3.4K]

Let

x--------> the length side of the square base of the box

y-------> the height of the box

we know that

The surface area of the box is equal to

$SA=4xy+x^{2}$

$SA=10,800\ cm^{2}$

$10,800=4xy+x^{2}$

$y=(10,800-x^{2})/(4x)$

$y=(2,700-0.25x^{2})/(x)$ --------> equation A

the volume of the box is equal to

$V=x^{2}y$ --------> equation B

Substitute the equation A in the equation B

$V=x^{2}*(2,700-0.25x^{2})/(x)$

$V=x*(2,700-0.25x^{2})$

$V=(2,700x-0.25x^{3})$

using a graphing tool

see the attached figure

For $x=60\ cm$

$Volume=108,000\ cm^{3}$

the point $(60,108,000)$ is a maximum of the function

Find the dimensions of the box

$x=60\ cm$

Find the value of y

$V=x^{2}y$

$y=V/x^{2}$

$y=108,000/60^{2}$

$y=30\ cm$

The dimensions of the box are

$60\ cm*60\ cm*30\ cm$

The largest possible volume of the box is

$108,000\ cm^{3}$

7 0

3 years ago

Read 2 more answers

How to know if a triangle is tan or sin cos

agasfer [191]

Answer:

The trigonometric ratios can be found by looking at the ratios of a right triangles sides. Sin is opposite:hypotenuse, cos is adjacent:hypotenuse, and tan is opposite

Step-by-step explanation:

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3 years ago

Estimate the measure of the following angles

DIA [1.3K]

Answer:

For A I'd say about 100° and for B about 150° (This is just my estimation)

Step-by-step explanation:

A is almost a right angle but a little more than 90°.

B is almost a straight/flat angle but it's less than 180°.

7 0

3 years ago

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Bond [772]

Answer:

Names that describe the shape- Trapezoid, Quadrilateral

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Step-by-step explanation:

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3 years ago

What is the value of x ??

Finger [1]

Answer:

Step-by-step explanation:

180-45=135 and 180-135=45

360 is the sum of all angles so:

360-105-135-45=75

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4 years ago