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3 years ago

Write the decimal as a percent. 0.487 = ??

Mathematics

2 answers:

pishuonlain [190]3 years ago

8 0

Answer:

48.7%

Step-by-step explanation:

OleMash [197]3 years ago

7 0

Step-by-step explanation:

To convert a decimal to a percentage,

multiply it by 100%.

=> Decimal = 0.487

=> Percentage = 0.487 * 100% = 48.7%

The answer is 48.7%.

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Helium is used for balloons because it is less dense than air. This is what allows helium balloons to rise. Suppose a helium- ai

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Answer: Option A

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Step-by-step explanation:

We know that density is defined as:

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Where

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We want to calculate the helium-air mass of a spherical balloon and we know its density and the diameter of the balloon.

Then we can calculate its mass.

1) We use the diameter of the spherical globe to calculate its volume.

The volume of a sphere is:

$V = \frac{4}{3}\pi r ^ 3$

and

$radius = \frac{diameter}{2}$

$V = \frac{4}{3}\pi(\frac{d}{2}) ^ 3\\\\V = \frac{4}{3}\pi(\frac{1}{2}) ^ 3$

$V= 0.5236\ ft^3$

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<em>The answer is 0.02 pounds</em>

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2 years ago