Abowl has the shape of a hemisphere whose diameter is 14 centimeters. by itself, the bowl weights 350 grams. if it is completely filled with liquid that weights 1.25 grams per cubic centimeter, then what is the total weight of the bowl and liquid? 1) 898 2) 1248 3) 1796 4) 2146

Ihonestly don’t understand this at all

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

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.