X^2 -9x = 0. factor and use the zero property to solve

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83