Evaluate the expression when x = 4 and y = 9.

1. xy
— =
3x

2. y + 19
——— =
x + 3

3. 5y - 6x =

4. 3xy - xy =

5. x + y
-—— =
y - x

6. x + y
——- =
2xy

7. 4x + 6y =

9x
8. 5xy + —— =
y

9/10 divide by -3/15 as a mixed number

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.