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3 years ago

Help please!!! Thxxxxx

Mathematics

1 answer:

nydimaria [60]3 years ago

6 0

Answer:

Step-by-step explanation:

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PLEASEEEE HELPPP

o-na [289]

Answer:

465 Dollars

Step-by-step explanation:

15h+40f = Amount Charged

if: h = 7

f = 9

15(7)+40(9) = Amount Charged

105 + 360 = Amount Charged

465 = Amount Charged

He will charge 465 dollars.

8 0

3 years ago

Read 2 more answers

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

The Queen Mary is a large cruise ship that has 8,123,700 cubic feet of cargo space. Express this number in scientific notation.

mixer [17]

<span>8,123,700 = 8.1237 x 10^6
so answer is </span>D. 8.1237 x 10ˆ6
hope it helps

8 0

3 years ago

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What’s the answer?? <br><br> B/18=-6

erastova [34]

Answer: -108/+18 = -6

Step-by-step explanation: Multiply 18 by -6 for B then it simplifies out.

3 0

2 years ago

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Maria has $50 in a savings account in week 1. She plans on depositing $8

enot [183]

Answer:

466

Step-by-step explanation:

50 + 8*52 = 466

4 0

2 years ago

Read 2 more answers