In the 30-60-90 triangle below, sides has a length of
length of
and side hasa
A. 4.8V
o
B.16 15.5
O C. 412,42
D. 8.5, 16
E. 16 13,165
OF 4,45

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%)