Question

The first term of ap is -50 and the 6th term is 45 find S6​

Answer 1

Answer:

-15

Step-by-step explanation:

a1=-50

a6=45

45=-50+(6-1)d

45+50=5d

95/5=d

19=d

s6=6/2{2(-50)+(6-1)19}

s6=3{-100+5×19}

s6=3{-100+95}

s6=3(-5)

s6=-15