A normal distribution has a mean of 10 and a standard deviation of 1. What is the probability of selecting a number that is at least 12?

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)