Solve the equation on the interval [0,2π). cos^4x=cos^4xcscx

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?

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b