Which expression can be used to find the sum of the polynomials?
(9–3x2) + (-8x2 + 4x + 5)
[(-3x2)+(-8x? )] +4x+[8+(-5)
• [3x2 +8x? ]+4x+[3+(-5)
. [3x2+(-8x? )] +4x+ [9+5
· [(-3x2)+(+8xp)] +4x+ [9+51

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

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 =