The ratio of the volumes of two spheres is 1:64. What would be the ratio of the surface areas of these spheres if the radius of the larger sphere is multiplied by 2?
O 16
O 64
oh
08

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

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.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?