If the mean of a given dataset is 85 and the standard deviation is
12, where will a majority of the
data lie?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?