Please help me prove that AÊD = B

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population, find the population standard deviation, o.79828588912497

Aline passes through 3,7 and 6,9 what equation represents the line

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.