The answer to your question is 59%
P= 2L + 2W
40= 2(12) + 2W
40= 24 + 2W
16 = 2W
W= 8
Answer:
<h2>Your welcome!</h2>
Step-by-step explanation:
Acid present in the solution = 10 L
Required volume concentration of acid = 8/100
Let x amount of water be added to achieve the required %.
In the new solution, proportion of acid= 10/(50+x)
Therefore,
10/(50+x) = 8/100
x=75
Ans: 75 L of water must be added to the solution
A circle is a set of points in a plane equidistant from a fixed point. It has a general formula of x² + y² = r². This is if the center is at the origin. However, if the center at point h and k, the equation becomes (x-h)² + (y-k)² = r².
We write the given equation in the form (x-h)² + (y-k)² = r² by completing the square.
x² + 4x + y² - 6y = −5
(x² + 4x + 4 )+ (y² - 6y +9) = −5 + 4 + 9 = 8
(x + 2)² + (y + 3)² = (2√2)²
Therefore,
center = (-2, -3)
radius = 2√2
