What is the value of x in the equation 2x + 3y = 36, when y = 6?

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?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.