Textbook: Chapter 2.4 pg 81 Question #36

36. Determine √√√65536

-√65536 - perfect square because 256 x 256 = 65536

-√256 - perfect square because 16 x 16 = 256

-√16 - perfect square because 4 x 4 = 16

- The answer for √√√65536 is 4 because:

-Since there are three square root sign, you have to square root the given number three times.

~√√√65536

~√√256

~√16 = 4

 

Textbook pg. 61 no.18

18. Determine the mean of each set of numbers. Express your answer to the nearest hundredths, if necessary.

a) 0, -4.5, 8.2, 0.4, -7.6, 3.5, -0.2

b) 6.3, -2.2, 14.9, -4.8, -5.3, 1.6

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The mean is the average you're used to , where you add up all the numbers and then divide by the number of numbers.

Example:

Note that the mean isn't a value from the orginal list. This is a common result. You should not assume that the mean is one of your original numbers.

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a) Find the mean of:

0, -4.5, -8.2, 0.4, -7.6, 3.5, -0.2

b) Find the mean of:

6.3, -2.2, 14.9, -4.8, -5.3, 1.6