Answer:
n=10
Step-by-step explanation:
The given equation is
...(1)
Let nth term is 2n.
We need to find the values of n.
It is clear that is sum of A.P., whose first term is 10 and common difference is 2.
Sum of A.P. is
where, a is first term and d is common difference.
Substitute a=10 and d=2 in the above formula.
...(2)
From (1) and (2), we get
Splitting middle term, we get
Since, n represents the number of terms so n cannot be a negative number, therefore number of term is 6.
Note: nth term and variable n both are different.
Sixth term is 20. So,
Therefore, the value of n is 10.
Yes is A and the solution is that when you add negatives it restart number like 3x - - 3= 0
Answer:
AAAAAAAAAAAA answer is A
Step-by-step explanation:
Seems to me that the answers c. indemnity
The only time something is not even or odd it has to equal 0
^-^