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3 years ago

Which of the following correctly uses the additive inverse property

Mathematics

2 answers:

maw [93]3 years ago

8 0

Step-by-step explanation:

-6÷-30=1/6÷1/30

1/6×30/1

Vladimir [108]3 years ago

7 0

What are the choices can’t help if there’s so choices to choose from

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rewona [7]

Answer:

q=−3x3+4x2−x

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Step-by-step explanation:

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3 years ago

Which equation can be used to find the measure of Arc E H G?

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3 years ago

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.

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3 years ago

Which of the following is equal to the fraction below?

Alecsey [184]

Wish I can help , but you didn’t show any fractions nor anything I can use to answer your question . Can you mark me brainliest for effort !?

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