The height, h, in feet of a ball above the ground is given by h --16t^2 +64 + 80, where t is the time in seconds. How long does it take the ball to hit the ground?
A)
3 seconds
B)
4 seconds
C)
5 seconds
D)
6 seconds

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Match each equation with the operation you can use to solve for the variable. subtract 10. divide by 10. divide by 5. subtract 18. multiply by 10. add 18. add 10. multiply by 5. 5 = 10p arrowright p + 10 = 18 arrowright p + 18 = 5 arrowright 5p = 10 arrowright