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Maths Puzzle
Numerical Ability
What are the divisibilty rules to the numbers 13,14,15,16,17,18,19 and 20?
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book Other Question
Show EACH step in solving each of the following equations. State if any solution is extraneous.
a. sqrt(3x + 1) = 4
b. 2x - sqrt(3x - 2) = 8
c. sqrt(2x - 1) = x - 8
For a light that has an intensity of 60 candles at its source, the intensity in candles, S, of the light at a point d feet from the source is given by the formula S=60K/dē , where