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AsiaDeas4078
20.07.2020 •
Mathematics
Th
Write an
explicit formula for
ans
then
term of the sequence 40,50,60,
Solved
Show answers
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Ответ:
n starts at 1, and n is a positive whole number (1,2,3,...)
======================================================
Explanation:
The sequence is arithmetic with first term 40 and common difference 10. Meaning we add 10 to each term to get the next one.
--------
a1 = 40 = first term
d = 10 = common difference
is the general nth term of this arithmetic sequence
Plug in n = 1 and you should get![a_1 = 40](/tpl/images/0710/0924/782d8.png)
Plug in n = 2 and you should get![a_2 = 50](/tpl/images/0710/0924/f3b23.png)
and so on
Ответ:
15 and 2
Step-by-step explanation:
15+2 is 17
15×2 is 30