Vivian is making keychains with beads she wants each keychain to have the same number of beads she has 12 blue beads and 21 yellow beads what is the greatest number of key chains she can make with exactly the same

An equation where variables are used to represent known values—function notation true or false

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 solution of each of the following.