Select all of the following that are quadratic equations.
3^2 - 2x = 2x + 5
6x^2+ 15x = 0
x^3 - 3x^2 + 1 = 0
9x - 2 = 0 7x^2 + 5x - 2 = 0
5x - 1 = 2x + 7

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

An object in geometry with no width, length or height is a(n):

The point (-7, -24) is on the terminal ray of angle 0 which is in standard position. a student found the six trigonometric values for angle e. the student's answers are shown. which value(s) are incorrect? sin(8) cos(8) 24 tan(0) sin(0)=25 cos(0) -- tan(ⓡ) - - 24 csc(o)=2 sec(0) --25 cot(6) - za csc(o) sec(0) cot(0) done