Which of the following lengths could NOT be used to create a right triangle? A - 27, 36, 45
B - 21, 28, 34
C - 39, 52, 65
D - 14, 48, 50
please help..!

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Solve the system of equations. y= 2x y= x^2 - 15

The variable in a relation who’s value depends on the value of the independent variable is called what?