Which pair of points have equal x-coordinates? On a coordinate plane, point T is (4, 6), point S is (5, negative 6), point R is (negative 5, negative 7), and point Q is (negative 5, 6).
points Q and R
points Q and T
points R and S
points S and T

Acylinder has volume 45π and radius 3. what is it’s height?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?