You check 20 laser pointers at random. Three of the laser pointers are defective. What is the experimental probability that the laser pointer is defective?

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?