What value of a would make the graph of f(x)= ax2 open up?
A. -8
B. 0
C. 10
D. -21

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.