The figure below is a right triangle. Which equation describes the relationship between the side lengths? x2 + y2 = z2
x2 + z2 = y2
x2 – y2 = z2
y2 – x2 = z2

What is (28 + 7 + 6 + 3) x 1/2 show your work

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?