Use the discriminant to determine whether the equation has two distinct real solutions, a single real solution, or no real solution. - 2x + 3x - 7 = 0
Choose the correct answer below.
O A. The equation has no real number solution
OB. The equation has one real number solution.
OC. The equation has two distinct real number solutions.

What graph correctly matches the equation y equals two negative x

Which ordered pair identifies a point in quadrant iv? a) (2, 5) b) (0, 1) c) (-1, -1) d) (12, -5) which quadrant is (-4,-6) in? a) i. b) ii. c) iii. d) iv.

The discrete random variables x and y take integer values with joint probability distribution given by f (x,y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x,y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).