Prove: if b ≠ 0, then the cross product term can be eliminated from the quadratic form ax² + 2bxy + cy² by rotating the coordinate axes through an angle θ that satisfies the equation cot 2θ = a-c/2b.

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit