What is 11.6 as a fraction

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%)

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet

Angle m aoc=108° m aob=3x+4° m boc=8x-28° find m aob