exam Maths Puzzle Numerical Ability

The speed of light in air is 3.00x10 to the power of 8 m/s.This is 8.80x10 to the power of 5 times as fast as the speed of sound in air at 15 calcius.Calculate the speed of sound i

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exam Other Question

Two men start at the same time from the same place and travel along roads that are at right angles to each other. One man travels 4mi/hr faster than the other, and at the end of two hours they are 40mi apart. Determine their rates of travel. Solve the system by graphing. Show your graph.

x + y = 3

x + y = -1