Which of the following is part of the solution to the trigonometric inequality sec(2x) < -1 over the interval 0 <= x <= 2pi radians?

Factor the expression using gcf 9b+45

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.

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.