Answer:
270 m^2
Step-by-step explanation:
1. Write down your formula. It is V= 1/3 Bh
2. Plug in your numbers. Your new formula is V= 1/3 (81)(10)
3. Simplify the expression to get 270.
Unsure of what you mean by "y1."
If you wish to solve this eqn for y, do this:
-5y = - 3x + 20,
-3x + 20
y = ---------------- = (3/5)x - 4 (answer)
-5
Answer: The answer is C, and D.
