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3 years ago

Write in numeral form 4100+210+8(61/10) +(11/100)

Mathematics

1 answer:

Mice21 [21]3 years ago

5 0

Answer:428 7/100

Step-by-step explanation:

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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

Kay [80]

Answer: Option A

About 0.02 pounds

Step-by-step explanation:

We know that density is defined as:

$d = \frac{m}{v}$

Where

d is the density

m is the mass

v is the volume

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

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

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

$V= 0.5236\ ft^3$

2) Use the density formula to find the mass

$d = \frac{m}{v}$

$m = vd$

$m = (0.5236\ ft^3)*(0.04\ \frac{pound}{ft^3})\\\\m = 0.02\ pounds$

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

5 0

3 years ago

Algebraic expression for the word phrase. 6 more than the difference of W and 3.

sergeinik [125]

Answer:

(W-3)-6

Step-by-step explanation:

it means that the difference between w and 3 is less than the other equation by 6

Read it carefully ;)

8 0

3 years ago

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Please help me with this Math Question/Problem!! 20 POINTS!!

devlian [24]

It is a reduction of the original because it became a smaller figure. The scale factor would be less than 1 because it is shrunken I would say the scale factor is 1/2

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4 years ago

If sin ⁡x=7/25, and 0 < x < π/2, what is cos⁡(x−3π/2)?

Likurg_2 [28]

Answer:

$Cos(x-\frac{3\pi}{2})=-\frac{7}{25}$

Step-by-step explanation:

Remember that $cos(x-y)=cos(x)cos(y)+sin(x)sin(y)$

Then,

$cos(x-\frac{3\pi}{2})=cos(x)cos(\frac{3\pi}{2})+sin(x)sin(\frac{3\pi}{2})\\$

But $cos(\frac{3\pi}{2})=0$ and $sin(x)=\frac{7}{25}$

Then

$cos(x-\frac{3\pi}{2})=cos(x)*0+\frac{7}{25}*sin(\frac{3\pi}{2})\\=\frac{7}{25}*(-1)=\frac{-7}{25}$

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3 years ago

Write a simplified polynomial expression in standard form to represent the area of the rectangle below:

makkiz [27]

Answer:

Step-by-step explanation:

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3 years ago

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Write in numeral form 4*100+2*10+8(6*1/10) +(1*1/100)

Write in numeral form 4100+210+8(61/10) +(11/100)