Find the roots. List your steps correctly.
8 points (1point for correct answer, 3points for showing work, 4points for listing the steps correctly)

Problem:
() = ^2 − 2 − 15

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

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i