Vance built a triangular sand box for his daughter. The measures of the lengths of the sides are 21 feet, 28 feet, and 37 feet. Explain how you know that the sand box is not in the shape of a right triangle?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

The test scores of 32 students are listed below. construct a boxplot for the data set and include the values of the 5-number summary. 32 37 41 44 46 48 53 55 57 57 59 63 65 66 68 69 70 71 74 74 75 77 78 79 81 82 83 86 89 92 95 99

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.