Which of the following could not be the lengths of the sides of a right angled triangle?
a. 3, 4, 5
b. 5, 12, 13
c. 8, 15, 17
d. 12, 15, 18
e. 9, 12, 15

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

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