Elena needs yellow, red, and blue ribbons. she needs 285 of the three colors combined, suggest numbers of rolls of each color that would give her enough ribbon.( hint break apart the 285 yards into any combination of 3 groups that total this amount.

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√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.

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5