To calculate $51^2$, Alex mentally figures the value $50^2$ and adds 101. Alex subtracts a number from $50^2$ to calculate $48^2$. What number does she subtract?

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field