Which numbers are greater than 3×10−7? choose all answers that are correct.
a. 9×10−9
b. 2×10−5
c. 6×10−7
d. 5×10−8
e. 2×10−7

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

Find the area of a parallelogram with base 15 yards and height 21 2/3

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?