Answer:
area = 8 × 18 = 144 cm^2
volume 8×18×5 = 720cm^3
Answer: x> -1
Step-by-step explanation:
w=2 w = -9
w^2 + 7w - 18 = 0
We can factor this equation
What 2 numbers multiply to -18 and add to 7
9*-2 = -18
9+-2 = 7
(w-2) (w+9) = 0
Using the zero product property
w-2 = 0 w+9 =0