The expression would be 19x-9. The reason is because if you think about it, it says that there is 9 less than 19x (x would be the unknown number) I hope this helps! ^-^

**Answer:**

C

**Step-by-step explanation:**

The area of cylinder is the area of the base (pi r^2) and the height (5)

**Answer:**

a job maybe

**Step-by-step explanation:**

B. 3ft, 4ft, 5ft

Pythagoras' Theorem where the square of the two smaller sides added together equals the square of the hypotenuse. If the two smaller sides are 3 and 4 then the hypotenuse is always going to be 5

**Answer:**

0.5 is the answer to this