A ball is thrown from a height of 197 feet with an initial downward velocity of 21 ft/s. the balls height h (in feet) after t seconds is given by the following h=197 -21t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Does the function satisfy the hypotheses of the mean value theorem on the given interval? f(x) = 4x^2 + 3x + 4, [−1, 1] no, f is continuous on [−1, 1] but not differentiable on (−1, 1). no, f is not continuous on [−1, 1]. yes, f is continuous on [−1, 1] and differentiable on (−1, 1) since polynomials are continuous and differentiable on . there is not enough information to verify if this function satisfies the mean value theorem. yes, it does not matter if f is continuous or differentiable; every function satisfies the mean value theorem.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x