Find the mean and the range (18,23,10,39,22,17,16,15)

A. Mean = 18.1; range = 28

B. Mean=20; range = 29

C. Mean=21.9; range=29

D. Mean = 20; range = 32

Kareem correctly answered 85% of the questions on his last math test. If hee missed 6 problems, how many questions were there on the test?

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Solve the following 2 (X+3) = X-4

Hey, can you factor completely 6x^2+11x-10 as (6x-4) (x-15/6) ? I know the proper way is (3x-2) (2x+5) but i did it this way and want to know if it is correct.

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Find the x - and y - intercepts of the graph of the equation y+49-7x

7 less than the square of a number

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Order these number's from least to greatest. 0.4, 5/8, 38%