Isaac has 21 green marbles and 7 blue marbles. he wants to place them in identical groups without any marbles over. what is the greatest number of groups isaac can make?

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%)

Mikes car gets an average of 28 mpg. there are 12 gallons of fuel in mikes car when he starts his trip of 140 miles. about how many gallons are left at the end of his trip?

Triangle abc has coordinates a(1,-1), b(0,2), and c(2,1) and it is reflected over the line y = x to form triangle a'b'c'. what are the coordinates of triangle a'b'c answer the question using complete