The sum of the given AP -5 + (-8) + . . . + (-230) is
Answers
Answered by
0
Answer:
ap,a=-5d=-8
n=-230
a+(n-1)d
(-5)+(-230-1)-8
5+229-8
234-8
225
Step-by-step explanation:
Answered by
0
Answer:
-8584
Step-by-step explanation:
given that
a= -5
d= -8-(-5)
= -8+5
= -3
aₙ= a+(n-1)d
-230 = -5+(n-1)*-3
-225 = (n-1)*-3
75 = n-1
n= 74
sum
Sₙ = n/2{2a+(n-1)d}
Sₙ = 74/2{-10+(-74*-3)}
Sₙ = 37{-10 - 222}
Sₙ = 37*-232
Sₙ = -8584
Hope it helps
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