for an A P,a=-10,d=4.find S10
Answers
Answered by
4
a = -20
d = 4
n = 10
then S10 = ?
we know
=>
=> 5( -40 + 36)
=> 5 × -4
=> -20
Answered by
13
Answer:
Given a = -10 ; d = 4 n = 10
put these values in the formula
= 5 (-20 + 9 ×4)
= 5 ( -20 + 36)
= 5 × 16
this is the answer of your question. Hope you will understand it
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