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jenniferalvarez360
30.08.2019 •
Mathematics
Ihave to
position value of term
1 7
2 10
3 13
4 16
5 19
6 22
which expression gives the number in the nth position in the sequence?
a) 2n - 2
b) 3n + 4
c) 4n - 1
d) 5n
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Ответ:
Option B is correct
3n+4[/tex]
Step-by-step explanation:
The nth term for the arithmetic sequence is given by:
where,
n is the number of term
d is the common difference.
Given the table:
Position(n) Value of Term(
)
1 7
2 10
3 13
4 16
5 19
6 22
from the given table:
At n = 1 ,
At n = 2
at n = 3
Common difference(d) for the sequence is 3
Since,
⇒![d = 10-7=13-10......... = 3](/tpl/images/0211/2483/eca17.png)
Substitute d = 3 and
in [1] we have;
⇒![a_n = 7+3n-3](/tpl/images/0211/2483/ec69f.png)
⇒![a_n =3n+4](/tpl/images/0211/2483/5a08f.png)
Therefore, the expression gives the number in the nth position in the sequence is,![3n+4](/tpl/images/0211/2483/66109.png)
Ответ:
x+3=9, k+22=29, x+5=7, x+7=10, x+6=11
y-5=8, p-18=3, 12-x=1, x-4=1, x-5=8
Step-by-step explanation: