if the 10th term of an A.P is 21and the sum of its first ten terms is 120, find its nth term..step by step explanation plz
varsha3592:
no sry..
who
why
they r answering...
ok u are a fool
I'm not a fool... ur a fool
you are donkey , u don't even no how to answer this question
get lost.. men.... s I don't know.. any problem for u?
Ab bol kon iss koh knowing nahi karta mai ya tu
sry yr...
Answers
Answered by
0
Answer:
Step-by-step explanation:
Sum of n terms = n/2×[first term +last(10th)]
120=10/2×[a+21]
a=3
Given 10th term=a+9d=21
Difference d=2
Nth term =3+(n-1)2
Answered by
1
Mate this is your answer
Attachments:
The point P can be where ever ( might be x axis or y axis) but it is asked that we need to find the distance from the origin
From the origin means ....
So let x co ordinate of P be x
By using distance formula
√(x-0)^2+(y-0)^2
haa ok
:)
tqsm
Bas kar kya thanks . I am thank full to you that you have asked to me only
:-)
Similar questions