- When is the next new moon for nov 2015?

Discover Questions

Going the speed of light how long will it take to get to the next “earthlike” planet? I need help with the above question. Please show steps and final answers. Thanks!!!? How was the cov( X(s), X(t)) obtained. i know that E[x(s)] * E[x(t)] = 0 but i don't know how to calculate E[x(s) x(t)]? A (alpha) is associated with a type 2 error? Tina has 20 rings. In how many ways can she select a set of 3 rings?
A.) 1140
B.) 1000
C.) 950
D.) 850?