<span>Let x=amount of time it takes both pipes draining together to empty the pool
First pipe empties at the rate of 540,000/150=3600 liters/min
Second pipe empties at the rate of 540,000/225=2400 liters/min
Together, both pipes empties at the rate of 3600+2400=6000 liters/min, so our equation to solve is:
6000*x=540000 </span>
Answer: That would be xy−4x <3 hope it helps
Step-by-step explanation: all u have to do is multiply the polynomials
Answer:
x ≈ 23.31
Step-by-step explanation:
We can use the law of cosines because we know 2 sides and 1 angle.
The general formula for the law of cosines if the triangle sides are a, b,c and α is the angle between sides a and b. c is the missing side.
In our problem the law of cosines is
x = 
x ≈ 23.31
Answer:
A
Step-by-step explanation:
The graph decreases to a minimum then turns and increases.
This is a minimum and occurs at the vertex (1, - 4 )
Answer:
The solution is (2, 10)
Step-by-step explanation:
In order to solve this system of equations, multiply the second equation by 2, then add through. This will allow the x terms to cancel.
10x + 3y = 50
-10x - 2y = -40
---------------------
y = 10
Now that we have y, plug in and find x.
-5x - y = -20
-5x - 10 = -20
-5x = -10
x = 2
