Math Challenge Quiz

The midpoint of (5,0) and point B is (-2,6). What are the coordinates of B?

What is the y-intercept of the line passing through (2,-2) and with slope 4?

A die is rolled. Find the probability that the number that comes up is not a multiple of 3.

If the mean of three numbers is 20 and the mean of five numbers is 12, what is the mean of the eight numbers combined?

What is 39990 + 199?

If the difference between the square of a positive integer and the integer before it is 33, what is the integer?