6 litres of 50% + 4 litres of 25%
The pair of equations: x + y = 1 and x + y = 3 have no solution. If any ordered pair (x,y) satisfies the first equation it cannot satisfy the second, and conversely. The two equations are said to be inconsistent.
Since there are two variables involved ... 'x' and 'y' ... a solution requires two equations. That's why the collection of equations is called a "system" of them. So far, in your question, you have supplied one equation. We eagerly await the arrival of the second one, so that we may begin working on the solution.
x2-5x = 24 x2-5x-24 = 0 (x-8)(x+3) = 0 x = 8 or x -3
It could be either, depending on what x equals. If x = 9, 8 will solve the first one. If x = 1, 8 will solve the second one.
No solution. Multiply second equation by 3 and get 12x + 6y = 0 but already stated 12x + 6y = 9...
144liters
To find out how much of the 30% acid solution is needed, we can set up a weighted average equation. Let x be the volume of the 30% solution needed. Since the final solution is 62% acid, we can write the equation as: 0.80*(400-x) + 0.30x = 0.62*400. Solving this equation, we find x to be 280 liters. Therefore, 280 liters of the 30% acid solution is needed to make a 400L solution that is 62% acid.
A dilute solution.
250,000 liters per second.
420 gallons per second is about 1,589.7 liters per second.
To convert gallons per hour to liters per second, you can use the conversion factors: 1 gallon = 3.78541 liters and 1 hour = 3600 seconds. First convert 5.750 gallons to liters: 5.750 gallons * 3.78541 liters/gallon = 21.763 liters. Then, convert hours to seconds: 1 hour/3600 seconds. Finally, divide the liters by the seconds to get liters per second: 21.763 liters / 3600 seconds ≈ 0.00604 liters per second.
Multiply by 3600.
See the two Related Questions to the left for the answer.The first is how to prepare a solution starting with a solid substance (and dissolving it). The second question is how to prepare a solution by diluting another solution.
Nile river discharges 3.1 million liters per second.
1 (kg / liters) per second = 3600 (kg / liters) per hour. So, multiply kg/l per second by 3,600 to get kg/l per hour.
To convert 77 milliliters per second to liters per hour, first convert milliliters per second to liters per hour. There are 3600 seconds in an hour. So, 77 milliliters per second is equal to 0.2772 liters per hour.
111mL per minute equates to 0.00185 liters per second.