A ray and a line intersect to forn 21 and 22 as shown below. If m<1 = (3x+22° and m/2 = (2x+8, what is the measure of <1?

112

68

58

30

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

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.