Round 723,900 to the nearest ten thousand

Which ahows the graph of the solution set of 6x+4y< 12

What is the solution of the systems of equations? y=2/3x+3 x=-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 =