3 years ago

The square root of a number is between 8 and 9. Which of these could be that number?

1 answer:

8 0

The number would have to be in between 64 and 81, since those are the squares of 8 and 9. So, choose a number greater than 64 but less than 81.

Hope this helps :)

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Pairs, in this case, relates to a group of 2 or more. We have 6 friends. Let's call them A,B,C,D,E,F. This will allow us to make a [some sort of] combination tree:

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3 years ago

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We breakdown the components of the distances.
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x - component = -90 miles
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y - component =(80 miles)*(cos 30°) = 69.282 miles (positive)

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