Avariable of two populations has a mean of 30.7 and a standard deviation of 32.1 for one of the population and it mean if 30.7 and it’s dinner deviation of 26.6 for the other population for independent samples of size 6211 and 4581 respectively find the mean and standard deviation of x1 minus x2

Which expression gives you the distance between the points (5,1)and(9,-6)

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.