Make x the subject of the formula if a/b-x=b/a+x
1 answer:
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Answer: The correct option is
(C) 26.
Step-by-step explanation: Given that in a certain quiz that consists of 10 questions, each question after the first is worth 4 points more than the preceding question.
All the 10 questions on the quiz are worth a total of 360 points.
We are to find the worth of the third question in points.
Since each question after the first is worth 4 points more than the preceding question, so this will make an arithmetic sequence with
first term a, common difference, d = 4 and number of terms, n = 10.
We know that, in an A.P. with first term a and common difference d,
According to the given information,
Therefore, the third term of the sequence is
Thus, the third question worth 26 points.
Option (C) is CORRECT.