The discriminant is a quick way to determine the quantity and type of the possible solutions of a quadratic equation. if the discriminant has a value of -28, what can we conclude about the solution(s) to the equation?

there are no real solutions to the quadratic equation.
there are two real solutions to the quadratic equation.
there is only one real solution to the quadratic equation.
there are three real solutions to the quadratic equation.

Mary had at least an 80% on her test write an inequality to represent this situation

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true