Use special right triangles to solve for the exact value of y. -4(square root)3
-8(square root)3
-12(square root)3

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.

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i

£100.80 divided by 14 equals 7.2 how would we put this as money