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3 years ago

12

Solve 1/2 (8x+20)=18

2 answers:

vekshin13 years ago

8 0

1/2 *2(4x+20)
The 2 cross out then its 4x+20

MatroZZZ [7]3 years ago

5 0

Answer:

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

1

2

(8x+20)=18

Simplify: (Show steps)

4x+10=18

Step 2: Subtract 10 from both sides.

4x+10−10=18−10

4x=8

Step 3: Divide both sides by 4.

4x

4

=

8

4

x=2

Answer:

x=2

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What the * stands for ?

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3 years ago

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 $=\frac{1}{2}\times2\pi\times radius$

$=\pi\times radius$

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

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

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

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Answer:

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Step-by-step explanation:

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maria [59]

Answer:

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Step-by-step explanation:

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