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2 years ago

Which ratio is equal to 27 : 81?

Mathematics

2 answers:

Assoli18 [71]2 years ago

4 0

Answer:

C) 3: 9

Step-by-step explanation:

27: 81

Ratios are same as fractions, that is why 27:81 = 27 / 81

Now that we go this fraction, let's make it an equivalent fraction:

(27 / 9) / (81/9)

=> 3/9

=> 3 : 9

If my answer helped, kindly mark me as the brainliest!

Thanks!!

mestny [16]2 years ago

3 0

The answer is C. 3 : 9 :) hope this helped

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Answer:

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Lowest Altitude = 460 miles

Step-by-step explanation:

The standard form of equation of ellipse is:

$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$

If a > b, then the major axis is horizontal.

If a < b, then the major axis is vertical.

Now, given:

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b = 4420

We can write the equation of the ellipse as:

$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1\\\frac{x^2}{4446^2}+\frac{y^2}{4420^2}=1$

This is the equation, centered at origin.

Since a > b, we can say that the major axis is horizontal and minor axis is vertical.

So, it stretches:

4446 miles from the center of the earth towards both -x and +x axis

and

4420 miles from the center of the earth towards both -y and +y axis

Since, the radius of the earth is 3960 miles, it means from center to earth's surface in all sides is 3960 miles.

The highest and lowest point altitude will be the different in x and y axis (horizontal and vertical) of the point with orbit of the satellite.

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and

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Thus,

Highest Altitude = 486 miles

Lowest Altitude = 460 miles

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2 years ago

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Answer:

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Step-by-step explanation:

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Answer:

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