Determine whether the statement is always, sometimes, or never true: A quadratic function equation that cannot be factored has a real solution

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

To prove that def ~ gfh by the sss similarity theorem using the information provided in the diagram, it would be enough additional information to know that

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =