Which of the following equations are identities? Check all that apply. A. tan2x = sec2x-1
O B. sin²x = 1 - cos²x
O C. sinx-cos2x = 1
D. cot2x+csc2x= 1

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

What type of symmetry does a rhombus have?