Evan wanted to find out what toothpaste makes teeth the cleanest. so everyday he tried different toothpaste, and had closeup plaque and water test, find independent and dependent variables

41/2 - 1 1/3 what is the answer as a fraction?

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.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10