A skydiver's speed during a free fall
1 answer:
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Answer:
" the summation from n equals 1 to 8 of 1 plus 3 times n " ⇒ 3rd answer
Step-by-step explanation:
The sequence is : 4 , 7 , 10 , ........
∵ 7 - 4 = 3
∵ 10 - 7 = 3
∴ The sequence is an arithmetic sequence, where the first term is 4
and the constant difference is 3
∵ The rule of the arithmetic sequence is ,
where is the first term, d is the constant difference and
n is the position of the term in the sequence
∵
∵ d = 3
∴
∴
∴
The segma notation is:
∑ (1 + 3n)
It means <em>" the summation from n equals 1 to 8 of 1 plus 3 times n "</em>