2. Which numbers are irrational? Check all that apply.
A. 42
C. 164
B. 100
D. 121

1. are the triangles similar and if so why? what is the value of x? show your work.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)