Math, asked by revanna35, 10 months ago

-2,-5,-8...........find a20

lovekush16: a=-2, d= -3, a+19d = -2+19×(-3) = -2- 57, = -59

Answers

Answered by ballu40

1

Answer:

we don't know your answer..........

Answered by diyagoyal891gmailcom

1

Step-by-step explanation:

Sn=n/2(2a+(n-1)d)

S20=20/2(2(-2)+(20-1)-3)

S20=10(-4-57)

S20=10(-67)

S20=-670

Hope you understand it:):)

please mark as brainliest!!!

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