Es 24.......................
It would be elimination (C) because 7x and -7x can be eliminated into 0.
7x + 5y = 19
-7x - 2y = -16
3y = 3
3 3
y = 1
7x + 5y = 19
7(1) + 5y = 19
7 + 5y = 19
- 7 - 7
5y = 12
5 5
y = 2.4
(x, y) = (1, 2.4)
Answer:
answer is B if not try A if not this one then try both of the answers
Answer:
5.655 m³/min
Step-by-step explanation:
Halfway from the bottom of the tank, the radius is half that at the top, so is 1 m. That means the surface area of the water at that point is ...
A = πr² = π(1 m)² = π m²
The rate of flow of water into the tank is the product of this area and the rate of change of depth:
flow rate = area × (depth rate of change)
= (π m²) × (1.8 m/min) = 1.8π m³/min
flow rate ≈ 5.655 m³/min
