To qualify to drive in the HOV lanes,your car must have
1 answer:
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Answer:
Option B is correct
m = 0.5 is the solution to the equation
Step-by-step explanation:
Given the equation:
Add 2.7 to both sides, we have;
Simplify:
Add 1.8 m to both sides we have;
Divide both sides by 5.4 we have;
⇒m = 0.5
Therefore, the solution for the given equation is, 0.5
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.