A playground slide is 14.5 feet long with an 8.5-foot tall ladder. A playground slide is 14.5 feet long and has an 8.5 foot tall ladder. The angle formed by the ladder with the ground is 90 degrees. The angle formed by the slide with the ground is x.

What is the measure of the angle that the slide makes with the ground, x, to the nearest degree?

28°
36°
54°
62°

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.

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me