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2 answers:
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Answer:
B. 5
Step-by-step explanation:
We have been given that R varies directly with S. When S is 16, R is 80. We are asked to find constant of variation.
We know that two directly proportional quantities are in form , where,
k = Constant of variation.
Upon substituting our given values, we will get:
Therefore, the constant of variation is 5 and option B is the correct choice.
Value of the expression will be 7
<u><em>Explanation</em></u>
Given value of the variables are : and
Given expression:
So, <u>plugging the values</u> of and
into the above expression, we will get...
So, the value of the expression will be 7.