Lines k and I are parallel and cut by transversal j. Which statement is a valid conclusion?

A.<6 and <7 are complementary

B. <4 and <8 form a linear pair

C. <1 and <2 are congruent

D.
<2 and <7 form vertical angles

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

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.