How many triangles can be made if two sides are 4 inches and the angle between them is 90

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

What are the triple angle formulas? is it related to double angle identities?

The equation ip| = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn?