Solve the following 32 divided by 4 + 4 x 8

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

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%)