The grades on a math midterm at Springer are roughly symmetric with = 68 and o = 4.5. Brandon scored 71 on the exam.
Find the Z-score for Brandon's exam grade. Round to two decimal places.

If the discriminant if a quadratic equation is 4 which statement describes the roots?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)