Rectangular garden is 15 1/2 feet long and 26.5 wide. you plan to build a border. the boarder of material cost $2.88 for 1.5 feet in length. the border will be three bricks high. your contractor will charge you $420 for the labor. what will be the total bill for the project

The number of possible solutions of a polynomial can be found by looking

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 a is a nonzero real number then the reciprocal of a is