The mean of a set of credit scores is Mu = 690 and Sigma = 14. Which statement must be true? z690 is within 1 standard deviation of the mean.
z690 is between 1 and 2 standard deviations of the mean.
z690 is between 2 and 3 standard deviations of the mean.
z690 is more than 3 standard deviations of the mean.

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. another supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which would you choose and how much would you save with that choice? show calculator try it! if you buy 1000 ml bags, how many do you need to buy each month? type your answer in the space provided and click on the check answer button.

4+(2+x) can you me solve this problem

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.