Find the mean, median, midrange, and mode for the given sample data.
49 52 52 52 74 67 55 55

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Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180