The blueprint below is for a backyard koi pond. Each grid square is 0.75 inches. If the scale is 0.75 inches = 5 feet, what is the actual area of the koi pond?

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?