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kipiarov [429]
3 years ago
7

Help!! Please!!!!!

Mathematics
1 answer:
VLD [36.1K]3 years ago
4 0

Answer:

the mean is 8 and the absolute deviation is 1.5

Step-by-step explanation:

to find the mean you add up all the numbers, then you just divide by how many numbers there are. in this case, you would do 64/8 which would then equal 8. then you see how much the numbers differ from the mean. like for your numbers, for 8 it would be 0, for 9 it would be 1, for 7 it would be 1, for 6 it would be 2. you see it? its just how far away it is from the mean. so once you do that, you should have a 6. then you do 6/4 which is 1.5. hope this helps!

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Option (D) is correct.

Step-by-step explanation:

Formula

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As given

The volumes of two similar spheres given that the ratio of their radii is 4:7 .

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Radius of first sphere = 4x

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Putting the values in the formula

Volume\ of\ first\ sphere = \frac{4}{3}\pi\times 4x\times 4x\times 4x

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Volume\ of\ second\ sphere = \frac{4}{3}\pi\times 7x\times 7x\times 7x

Volume\ of\ second\ sphere = \frac{4}{3}\pi\times 343x^{3}

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\frac{Volume\ of\ first\ sphere}{Volume\ of\ second\ sphere} = \frac{\frac{4\pi\times 64x^{3}}{3}}{\frac{4\pi\times 343x^{3}}{3}}

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