- 1 6 12 18 is this arithmetic sequence?

Discover Questions

Show that the equation cos(x) − 3x = 1 has only one real root.? Arrange the following elements in order of decreasing atomic size cs,s,se,sb and pb? I'm having trouble balancing this equation:
CaO + SO2 + O2 -> CaSO4? If one theoretically entered a black hole, stayed there for an hour and came back out, would time have changed more than an hour in earth? Find the points (x,y) on the graph y=x^2 that are closest to the point (0,2)?