Choose the best definition for the following phrase: combining like terms (1 point)
1 answer:
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Recall that the conversion of 155% to decimal is to divide by 100. Thus, 155%=1.55.
Now, multiply this by 80:
So our answer is 124.
Now, multiply this by 80:
So our answer is 124.
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.