Which statement is true about a dilation? (1 point) A. A dilation is a non-rigid motion.
B. A dilation preserves length measures. C. A dilation does not preserve angle measures.
D. A dilation is a rigid motion.​

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.

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?