Carmen is simplifying the expression (6.21 + 0.93) + 0.07. She recognizes that 0.93 and 0.07 will combine to equal 1, so she would like to find that sum before she adds 6.21. Which property will allow Carmen to do this without changing the value of the expression?

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 =

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10