Answer:
75 minutes
Step-by-step explanation:
The rate at which the tank is filled up, F, and emptied, E, are respectively:

Since V is the full volume of the tank, the time required to fill the tank if both pipes are open is given by:

It will take 75 minutes to fill the tank if both pipes are open.
Answer:
HAHAHAAHAAHHAHAHA
Step-by-step explanation:
NBBBbahahahhahahahahahahahahaa
Hello there!

Explanation:
↓↓↓↓↓↓↓↓↓↓↓↓
First you had to switch sides.

Then you divide by -4 from both sides of the equation.

Simplify

Next you had to add by 5 from both sides of the equation.

Simplify

You can also divide by 2 from both sides of the equation.

Simplify it should be the correct answer.

<u><em>Answer⇒⇒⇒⇒⇒r=-9</em></u>
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Have a great day!
-Charlie
Answer:
Option d.
Step-by-step explanation:
we know that
The graph of a continuous probability distribution is a curve. Probability is represented by area under the curve.
The curve is called the probability density function (abbreviated as pdf).
We use the symbol f(x) to represent the curve
therefore
The probability density function f(x) represents . the height of the function at x.