When I want to square 6, why does my calculator say it's 36, when I know it is positive 36?
Find all values for which the rational expression is not defined:
2x  7  x² + 5x  24 You have a wire that is 42 inches long. You want to cut it into 2 pieces. You want one piece to be 2/5 the length of the other. How long should the 2 pieces be?
Which classification best describes the triangle?
The measures of the angles of a triangle can be represented by the expressions x°, (x + 20)°, and (2x)°. A box contains 9 balls numbered 1 to 9. A ball is taken at random from the box.
Find the probability that the ball has an even number. 
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