Which of these strategies would eliminate a variable in the system of equations? x – 2y = 11
5x + 3y = -11
Choose all answers that apply:
Multiply the top equation by -5, then add the equations.
Multiply the top equation by 5, then add the equations.
Add the equations

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)

Angles 1 and 2 are complimentary angles. angle 1 = 52 degrees. what is the measure of angle 2?