Answer:
good question
Step-by-step explanation:
Let <em>V</em> be the volume of the tank. The inlet pipe fills the tank at a rate of
<em>V</em> / (5 hours) = 0.2<em>V</em> / hour
and the outlet pipe drains it at a rate of
<em>V</em> / (8 hours) = 0.125<em>V</em> / hour
With both valves open, the net rate of water entering the tank is
(0.2<em>V</em> - 0.125<em>V </em>) / hour = 0.075<em>V</em> / hour
If <em>t</em> is the time it takes for the tank to be full, then
(0.075<em>V</em> ) / hour • <em>t</em> = <em>V</em>
Solve for <em>t</em> :
<em>t</em> = <em>V</em> / ((0.075<em>V</em> ) / hour)
<em>t</em> = 1/0.075 hour
<em>t</em> ≈ 13.333 hours
Hdjdjfhonrfn. The answer is c: -4
Answer:
Step-by-step explanation:
ƒ(x):
-x + y = -3
For easier calculations, add x to each side. Then
y = -3 + x
x = 1: y = -3 + 1 = -2
x = 0: y = -3 + 0 = -3
x = -1: y = -3 + (-1) = -3 - 1 = -4
g(x):
-6x + y = 2
y = 2 + 6x
x = 1: y = 2 + 6(1) = 8
x = 0: y = 2 + 0(1) = 2
x = -1: y = 2 + 6(-1) = 2 - 6 = -4
Answer:
39$ and 50 cents
Step-by-step explanation:
because 35 plus 4.5= 39.5