I don't know if i understand but i believe your answer is (D)V
The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.
<h3>What is the litters about?</h3>
Note that:
We take x = volume of 25% solution.
We take y = volume of 65% solution.
So, Equation of total volume:
x + y = 80
Hence the equation of amount of acid:
0.25x + 0.65y = 0.45(80)
0.25x + 0.65y = 36
Solve x + y = 80 for x.
x = 80 - y
Then Substitute into the second equation.
0.25(80 - y) + 0.65y = 36
20 - 0.25y + 0.65y = 36
0.4y = 16
y = 40
x + y = 80
x + 40 = 80
x = 40
Therefore, The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.
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I'm sure you can they might check it just for the safety of the passengers.
<span>2^(3x)/2^y = 2^(3x-y) = 2^12 = 4096</span>
An error is a misconception that can happen when doing some work that is not concluded accordingly. Some of the errors that concern are gross, random, systematic, and computer errors.
<h3>What are the types of errors?</h3>
Gross error is an error that is unpredictable and is due to s a sudden change because of the operator or the system. While random errors are caused to mistake in observed values.
Systematic errors are the identifiable errors that change the results of the experiment and a computer error is a mistake made by the computer system.
Therefore, random, systematic, computer and gross are the types of errors.
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