Claire correctly solve the problem x/4 = 36 / 16 for x by using cross products to get the equation 16 x = 144 and then dividing both sides by 16 to get x = 9. she showed that she can use cross products to solve the proportion because she gets the same answer if she solves it as shown

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

In what form is the following linear equation written y=9x+2

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 =