1. What is the center and radius of the circle?
(x-4)² + (x-7) ² - 49

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 =

If i have 20$ and i gave 5$ away how much i got

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42