Noah buys coffee sachets to use in his coffee maker. One day he buys enough coffee sachets to last him four weeks. He uses 3 coffee sachets each day. There are 10 coffee sachets in a pack. A pack costs £2.99 How much does Noah spend?

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 nonpermissible replacement for binthis expression.b2/5b +5

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?