DNA is composed of repeating structural units called .
is the five-carbon sugar found in DNA.

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

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?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?