Two number cubes are rolled. what is the probability that the sum of the numbers rolled is either a 3 or an 8?

a. 7/36
b. 1/5
c. 5/648
d. 1/144

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible