What is the variance of the following data? If necessary, round your answer to two decimal places.

48, 65, 57, 54, 61, 57, 52, 61, 57

a, 23.43

b. 83.17

c. 71.35

d. 86.43

Round to the nearest place 4,551,999

If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a|?

What is 43,000,000,000 in scientific notation

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