Could banks in the same city create an independent check-clearing network that didn’t use any intermediaries? why or why not?

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%)

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n

Find the solution to this system 2,1 1,-2 1,2 -1,2