The definition of parallel lines requires the terms line and plane while the definition of perpendicular lines requires the undefined terms of line and point. what characteristics of these geometric figures create the diffrent requirements

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 =

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account