I WILL MARK YOU THE BRANILIEST IF ANSWER IS CORRECT. PLEASE HELP ME! For what value(s) of t, with 0 ≤ t ≤ 4, is the slope of the curve undefined for the graph defined by x = 2t - 2 sin(t), y = 2 - 2 cos(t) ? Type your answer in the space below to the nearest whole number. (ex: 4)

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent. the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244