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In math what do these symbols mean > What is the z scheme? A car travels at 40 mph for 2 hr and 60 mph for 3 hrs. What is its average speed? How many combination can we get from 3 letters and 4 numbers? Hi, I'm trying to simplify xy/((x^-2) + (y^-2)) I've tried multiplying the numerator and the denominator by several things but to no avail?

Answer #1| 10/02 2014 05:50