what a2+ b2 equals in the first equation for a2+ b2 in the second equation after you substitute what equation do you get

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

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.

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction