Find the sum of first 20 term of the arithmetic sequence 3,13,23
Answers
Answered by
1
Answer:
20 term is 4 and 50 is answer please mark me as brainlist
Answered by
2
Answer:
We will use the formula
s
n
=
n
2
(
2
a
+
(
n
−
1
)
d
)
s
20
=
20
2
(
2
(
3
)
+
(
20
−
1
)
5
)
s
20
=
10
(
6
+
95
)
s
20
=
10
(
101
s
20
=
1010
Hopefully this helps!
Similar questions