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3 years ago

If seven x multiple by 3 is 63, what is x?

Mathematics

2 answers:

mezya [45]3 years ago

8 0

Answer:

63 divided by 3 is 21 so x=21

Step-by-step explanation:

Aleonysh [2.5K]3 years ago

5 0

Answer:

x=3

Step-by-step explanation:

7x×3=63

21x=63

x=3

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2 years ago

What is the answer for this equation or problem? y+6=52 and what does y equal.

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Answer: y=46

Step-by-step explanation:

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3 years ago

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A space telescope on a mountaintop is housed inside of a cylindrical building with a hemispheric dome. If the circumference of t

Vlad1618 [11]

Answer:

$185553.7\text{ feet}^3$

Step-by-step explanation:

GIVEN: A space telescope on a mountaintop is housed inside of a cylindrical building with a hemispheric dome. If the circumference of the dome is $84\text{ feet}$ , and the total height of the building up to the top of the dome is $91\text{ feet}$ .

TO FIND: what is the approximate total volume of the building.

SOLUTION:

let the height of the mountaintop be $h\text{ feet}$

As the dome hemispherical.

circumference of a hemisphere $=\frac{1}{2}\times2\pi\times radius$

$=\pi\times radius$

$\frac{22}{7}\times radius=84$

$radius=26.75\text{ feet}$

total height of the building up to the top of the dome $=\text{radius of hemisphere}+\text{height of mountaintop}$

$=26.75+h=91$

$h=64.25\text{ feet}$

Volume of building $=\text{volume of cylindrical mountaintop}+\text{volume of dome}$

$=\pi(radius)^2h+\frac{2}{3}\pi(radius)^3$

as radius of mountain top is same as dome

putting values

$=3.14(26.75)^264.75+\frac{2}{3}3.14(26.75)^3$

$=145484.6+40069.1$

$185553.7\text{ feet}^3$

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3 years ago

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Step-by-step explanation:

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MArishka [77]

Answer:

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Step-by-step explanation:

this is the sample response

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3 years ago

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