Linda received the following scores on her essay tests.

64, 65, 63, 66, 60, 65, 66, 68, 69, 66, 63

What is the mean of her scores?

66
65
64.5
65.5

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

What is the anwers for 9+2x=5x-3-x

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%)