Keene has eight fewer ribbons than Sabrina. Julie has twice as many ribbons as Keene. They have 120 ribbons altogether. a. Write an equation that represents how many ribbons each girl has.
b. Solve to find the number of ribbons Sabrina has.
c. Find the number ribbons Julie and Keene gave.

Find x & pleeeeaaaassseeee me !

Assemble the proof by dragging tiles to the statements and reasons column

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.