In a group of 15 people 6 are left handed and the rest are right handed. if 7 people are selected at random from this group, what is the probability that 3 are left handed and 4 are right handed?

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?