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2 years ago

Can someone please help me with math.

Mathematics

1 answer:

pychu [463]2 years ago

4 0

Answer:

Step-by-step explanation:

That is a negative correlation. As x increases, y decreases. Notice that as you read from left to right, the points are going down which means negative.

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If 2.5 mol of dust particles were laid end to end along the equator, how many times would they encircle the planet? The circumfe

Natalka [10]

Answer:

They encircle the planet $3.76\times 10^{11}$ times.

Step-by-step explanation:

Consider the provided information.

We have 2.5 mole of dust particles and the Avogadro's number is $6.022\times 10^{23}$

Thus, the number of dust particles is:

$2.5\times 6.022\times 10^{23}=15.055\times 10^{23}$

Diameter of a dust particles is 10μm and the circumference of earth is 40,076 km.

Convert the measurement in meters.

Diameter: $10\mu m\times \frac{10^{-6}m}{\mu m} =10^{-5}m$

If we line up the particles the distance they could cover is:

$15.055\times 10^{23}\times 10^{-5}=15.055\times 10^{18}=1.5055\times 10^{19}$

Circumference in meters:

$40,076km\times \frac{1000m}{1km}=40,076,000 m$

Therefore,

$\frac{1.5055\times 10^{19}}{40,076,000} = 3.76\times 10^{11}$

Hence, they encircle the planet $3.76\times 10^{11}$ times.

8 0

3 years ago

My question is in the image below, thanks :3

stiks02 [169]

The answer will be A its on a 1 out 3 chance s

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3 years ago

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an iron rod of length 7 upon 8 m was cut into two pieces one piece is 1 upon 7 m long what is the length of the other piece.

bixtya [17]

Answer:

other: $\frac{41}{56}$

Step-by-step explanation:

$\frac{7}{8} =\frac{1}{7} + x\\=> x= \frac{7}{8} - \frac{1}{7} \\=> x= \frac{49}{56} - \frac{8}{56} \\=> x= \frac{41}{56}$

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2 years ago

Which of the following points IS not coplanar with points C. D and E?

valina [46]

R. It is not in the same plane as C, D and E

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3 years ago

Bill Granger is a parts clerk. He worked a total of 46.25 hours from Monday to Friday this week. If his regular pay is $12.75 pe

Bad White [126]

Answer:

His extra pay would be of $79.69

Step-by-step explanation:

Assuming that the clerk works regular 40 hour per week, then he has worked 6.25 extra (overtime) hours this week. Then his extra pay for overtime work would be:

6.25 times $12.75 = $79.69

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3 years ago

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