Suppose you add x liters of pure water to the 10 L of 25% acid solution. The new solution's volume is x + 10 L. Each L of pure water contributes no acid, while the starting solution contains 2.5 L of acid. So in the new solution, you end up with a concentration of (2.5 L)/(x + 10 L), and you want this concentration to be 10%. So we have
and so you would need to add 15 L of pure water to get the desired concentration of acid.
Answer:
Man it's easy
0.98.... = —–
0.98
Step-by-step explanation:
try putting a line above the 98.
if it helps don't forget to like and markme
Answer:
B
Step-by-step explanation:
Using the pythagorean triples: 3,4,5 you can determine the third side.
Using a right triangle you have a hypotenuse of 5, the height of the triangle would be 4, so then the base would be 3 but you have two right triangles together so you have to double it which equals 6.
Answer:
Company C
Step-by-step explanation:
To find the cost of each bear, you must divide each price by the amount of bears. The prices are shown below:
For company A, each bear costs $2.87.
For company B, each bear costs $2.89.
For company C, each bear costs $2.85.
So, the best buy for the team would be Company C.
Hope this was helpful!
