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2 answers:
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Answer:
416 g
Step-by-step explanation:
The mean is calculated as
mean = , then
= 398 ( multiply both sides by 5 )
sum of 5 pods = 1990 g
let x be the weight of the sixth pod , then
= 401 ( multiply both sides by 6 )
1990 + x = 2406 ( subtract 1990 from both sides )
x = 416
That is the weight of the sixth pod is 416 g
Question:
Which summation formula represents the series below? 1 + 2 + 6 + 24
(a)
(b)
(c)
(d)
Answer:
Option a: is the correct answer.
Explanation:
Option a:
By substituting the values of n and expanding the summation, we have,
Subtracting, we have,
Expanding the factorial,
Simplifying, we get,
Thus, the summation represents the series
Hence, Option a is the correct answer.
Option b:
By substituting the values of n and expanding the summation, we have,
Expanding the factorial,
Simplifying, we get,
Thus, the summation does not represents the series
Hence, Option b is not the correct answer.
Option c:
By substituting the values of n and expanding the summation, we have,
Adding, we have,
Expanding the factorial,
Simplifying, we get,
Thus, the summation does not represents the series
Hence, Option c is not the correct answer.
Option d:
By substituting the values of n and expanding the summation, we have,
Expanding the factorial,
Simplifying, we get,
Thus, the summation does not represents the series
Hence, Option d is not the correct answer.
Hence, the correct answer is Option a: