Ratio of boys to girls in a class of 27 is 1:2

What is the frequency of the sinusoidal graph?

Find the root(s) of f (x) = (x- 6)2(x + 2)2.

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.