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2 years ago

14

The sun is about 10 • 10 million miles away from earth. Write 10 • 10 using an exponent. Then find the value of the power. How m

any miles away is the sun?

1 answer:

marissa [1.9K]2 years ago

3 0

Answer:

so if 10 times 10 is 100
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Which expression is equivalent to (3-5x)(3+5x)

Levart [38]

I think the answer is 9-25x

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3 years ago

the volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of

FrozenT [24]

Answer:

The new volume is 8 times smaller than the original volume

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x ----> the volume of the reduced sphere

y ----> the volume of the original sphere

so

$z^{3}=\frac{x}{y}$

we have

$z=1/2$ ----> scale factor

substitute

$(1/2)^{3}=\frac{x}{y}$

$(1/8)=\frac{x}{y}$

$x=\frac{y}{8}$

therefore

The new volume is 8 times smaller than the original volume

Verify

The volume of the original sphere is

$r=18/2=9\ cm$ ---> the radius is half the diameter

$V=\frac{4}{3}\pi (9)^{3}=972\pi \ cm^{3}$

the volume of the reduced sphere is

$r=9/2=4.5\ cm$ ---> the radius is half the diameter

$V=\frac{4}{3}\pi (4.5)^{3}=121.5\pi \ cm^{3}$

Divide the volumes

$972\pi \ cm^{3}/121.5\pi \ cm^{3}=8$

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A cruise ship can cover 19 nautical miles in 323 minutes. How many nautical miles will it travel in 102 miles?

kow [346]

1 mile is equal to 0.868976 nautical miles
Therefore 12 miles is equal to 10.427, rounded the answer is B.

Hope that was helpful.

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What number must you add to complete the square <br> x^2-20x=17

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$(*)\ (a-b)^2=a^2-2ab+b^2$

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Answer: 10² = 100

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4.5 pounds or 4 1/2 if u need fraction form.

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