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2 years ago

Solve for x. 4(5x - 20) = -20 Enter your answer in the box. PLEASE HELP!

2 answers:

8 0

4(5x − 20)=−20

4(5x − 20)=−20Step 1: Simplify(4)(5x)+(4)(−20)=−2020x+−80=−2020x−80=−20Step 2: Add 80 to both sides.20x−80+80=−20+8020x=60Step 3: Divide both sides by 20.20x/20=60/20x=3Answer:x=3

Hope this helps:)

Colt1911 [192]2 years ago

6 0

20x - 80 = -20
20x = 60
x = 3

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Scorpion4ik [409]

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Step-by-step explanation:

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2 years ago

Cylinder and a cone have the same diameter: 8 inches. The height of the cylinder is 5 inches. The height of the cone is 15 inche

ss7ja [257]

Answer:

$V_{cylinder}=251.2\ in^3,$

$V_{cone}=251.2\ in^3,$

$V_{cylinder}=V_{cone}.$

Step-by-step explanation:

The volume of the cylinder is

$V_{cylinder}=\pi r^2 h,$

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If cylinder has diameter of 8 inches, then its radius is 4 inches. The height of the cylinder is 5 inches. Thus, the volume of the cylinder is

$V_{cylinder}=3.14\cdot 4^2\cdot 5=251.2\ in^3.$

The volume of the cone is

$V_{cone}=\dfrac{1}{3}\pi r^2 h,$

where r is the radius of a base circle and h is the cone's height.

If cone has diameter of 8 inches, then its radius is 4 inches. The height of the cone is 15 inches. Thus, the volume of the cone is

$V_{cylinder}=\dfrac{1}{3}\cdot 3.14\cdot 4^2\cdot 15=251.2\ in^3.$

As you can see the cylinder and the cone have the same volume.

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3 years ago

Which of the following is between 0.40 and 0.47?

tatyana61 [14]

The answer is C. 21/50 is 0.42. 7/50 is 0.14. 19/50 is 0.38. 43/50 is 0.86. To convert a fraction to a decimal, you will have to divide the numerator by the denominator.
Hope this helped.

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3 years ago

An item priced at $10.20 has a sales tax of $0.41.Find the sales tax rate expressed as a percent.

torisob [31]

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3 years ago

Just need to know the fraction

Reptile [31]

<h3>Answer: 1/2</h3>

The midsegment is always exactly half as long compared to the side it's parallel to.

Put another way, the longer side (4x+20) is twice long as the midsegment (3x).