Can someone pls me with this math problem. i have the answer, but i don’t know how to get there. the answer is (26 and a) or (74 and b) acceptable range is between 20 and 30 for 26, and between 70 and 80 for 74.

Find the total area for the regular pyramid ( follow the answer set up in the picture)

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

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?