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>
Step-by-step explanation:
Bro its too long shorten it a bit and i will answer it
So 1.70 (you can multiply it by 100 to make things easier if you want) - 1.50 = 0.15. So 0.15 is the difference between one term and the next.
Also, if you subtract 1.40 from 1.70 you'll find that the difference is 0.30, which is twice 0.15. And 1.70 is two terms away from 1.40. Thus, 1.40 + 0.15m is true, (m being the amount of terms away from the starting number.) In the case I mentioned, 1.40 + 0.15(2) was true. So, plug 31 into the equation:
1.40 + (31)(0.15) = 6.05. This is your answer.
First one is <
second one is >
third one is >
2d-5 divide all numbers by -4
