What is the solution for this system of equations? y=-3x+7 y=-3x+7 (-3,7) (7,-3) infinitely many solutions no solution

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.