Flying to Denver with a tailwind a plane averaged 558 mph. On the return trip the plane only averaged 512 mph while flying back into the same wind. Find the speed of the wind and the speed of the plane in still air. (Tailwind means the wind is pushing you – adding to your speed)

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Divide. write in the simplest form. 4 1/6 divided by 10