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creativ13 [48]
2 years ago
10

2. Which continent is estimated to have more than 5.31 billion people by 2050? To solve, find what percent 5.31 billion is of 9

billion. Write a ratio of part to whole. ? 100= 5.31 9Solve for ?. Change your answer for ? 100to a decimal and then to a percent.________ %
Mathematics
1 answer:
Firlakuza [10]2 years ago
6 0

Answer:

59%

Step-by-step explanation:

Which continent is estimated to have more than 5.31 billion people by 2050? To solve, find what percent 5.31 billion is of 9 billion. Write a ratio of part to whole. ? 100= 5.31 9Solve for ?. Change your answer for ? 100to a decimal and then to a percent.________ %

This is calculated as:

5.31 billion/9 billion × 100

= 0.59 × 100

= 59%

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Answer:

Step-by-step explanation:

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8xy= 2(2x + y) solve for y
STatiana [176]

Answer:  \displaystyle y= \frac{2\text{x}}{4\text{x} - 1}

============================================

Work Shown:

8\text{x}y= 2(2\text{x} + y)\\\\8\text{x}y= 4\text{x} + 2y\\\\8\text{x}y - 2y= 4\text{x}\\\\y(8\text{x} - 2)= 4\text{x}\\\\y= \frac{4\text{x}}{8\text{x} - 2}\\\\y= \frac{2*2\text{x}}{2(4\text{x} - 1)}\\\\y= \frac{2\text{x}}{4\text{x} - 1}\\\\

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Explanation:

The idea is to first get all the y terms to one side. I did this by subtracting 2y from both sides in the third step.

Then factor out y and divide both sides by (8x-2)

Afterward there's the optional steps of simplifying (as shown in the final two steps).

5 0
2 years ago
15. The container shown in the figure is filled with a liquid that weighs 50 g. Find its density.
3241004551 [841]

Answer:

  C.  0.006 g/cm³

Step-by-step explanation:

As the units tell you, density is the ratio of mass to volume. The volume of the container is found from ...

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Then the density is ...

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_____

<em>Comment on the problem</em>

The "liquid" has about the same density as air pressurized to 75 psi.

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2 years ago
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gulaghasi [49]
X=y-2
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2y=5y-10-17
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Thus, the two numbers are 7 and 9.
4 0
3 years ago
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