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2 years ago

Which area model represents 0.4 x 0.7 = 0.28?

Mathematics

1 answer:

sammy [17]2 years ago

8 0

Answer:

the one with pink and white at the top, and the same one with purple and blue on the bottom

Step-by-step explanation:

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Y = –3x – 5 help I don’t know the answer please

earnstyle [38]

Answer:

x=-5/3

Step-by-step explanation:

Add 5 to both sides to get 5=-3x.

Then divide by -3.

And get -5/3=x

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3 years ago

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

$1.9$

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3 years ago

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What is 4/3 ft x 15 inches <br> I need the anwser in inches

qaws [65]

Answer:

3/45

Step-by-step explanation:

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3 years ago

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Will give brainlest if right! Two plus two?

Temka [501]

4??? fish??? if it's a trick question, then the answer is probably fish :o)

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3 years ago

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PLEASE ANSWERRRRRRRRRRRRRRRRRRRRRRRR

tekilochka [14]

Answer:

a=11, b=53

Step-by-step explanation:

y=ax+b

x=1, y=64 -> 64=a+b

x=2, y=75 -> 75=2a+b

75-64=a, a=11, b=53

All the other points obey this rule.

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3 years ago

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Which area model represents 0.4 x 0.7 = 0.28?​

Which area model represents 0.4 x 0.7 = 0.28?