The ratio (m-2c) : (m+c) is equivalent to 1 : k show that m= c(2k+1)/k-1

What is the value of x? enter your answer in the box. photo attached.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.