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2 years ago

7

Marco surveyed the first 10 people

1 answer:

Nastasia [14]2 years ago

4 0

Yes they must close the pool 7 pm

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X^2 =1 how many solutions are there

HACTEHA [7]

Answer:

Answer:

x=1 or x=−1

Step-by-step explanation:

I think just 2

5 0

3 years ago

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Name 5 decimal numbers that are between 4.78 and 4.79. Explain your answer.

Karolina [17]

4.781, 4.782,4.783,4.784,4.785

I can't explain though:(

6 0

3 years ago

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What does 12- 23 +1,345 divided by 123

horrorfan [7]

12 - 23 = -11
-11 + 1,345 = 1,334
1,334/123 = 10.85

4 0

3 years ago

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Compare the surface area-to-volume ratios of the moon and mars. express your answer using two significant figures.

antoniya [11.8K]

we know that

For a spherical planet of radius r, the volume V and the surface area SA is equal to

$V=\frac{4}{3} *\pi *r^{3} \\ \\ SA=4*\pi *r^{2}$

The
ratio of these two quantities may be written as

$SAV =\frac{(4*\pi*r^{2})}{(\frac{4}{3}*\pi*r^{3})} \\ \\ SAV =\frac{3}{r}$

we know

$rMoon=1,738Km\\ rMars=3,397 Km$

$\frac{SAV Moon}{SAV Mars} =\frac{3}{rMoon} *\frac{rMars}{3} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{rMars}{rMoon} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{3,397}{1,738} \\ \\ \frac{SAV Moon}{SAV Mars} =1.9545$

therefore

the answer is

$1.9$

5 0

3 years ago

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Suppose temperature is at -6 what will the temperature be if it rises 13

Illusion [34]

7 degrees is what it would be

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3 years ago

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