What are the solutions of 2x2 + 3x = −5? (6 points)
the quantity negative 3 plus or minus i square root of 31 all over 4
the quantity negative 3 plus or minus 7i all over 4
the quantity negative 3 plus or minus i square root of 19 all over 4

Solve: 3x+y=6 4x-2y=18 show all work !

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.