If Helena uses 1 1/4 cups of water to make fabric softener how much vinegar does she need?

What is the best reason for jacinta to have a savings account in addition to a checking account

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1