Which equation does not belong with the other three? explain your reasoning.

5y=2x. y=2/5x. 10y=4x. 5xy=2

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show