Answer:

Option B
Step-by-step explanation:
<u>Sum of vectors in</u> 
Given two vectors
and
. The sum of both vectors is:

The vectors in the figure are


The sum is


Option B
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028282=099÷00÷00÷0÷=0÷9282=
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
Answer: 91 is 70% of 130
Step-by-step explanation:
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