Answer:
1. 28 ,2.2
Step-by-step explanation:
a=7, d=3, n=8
an= a+(n-1)d
=7+(8-1)3
= 7+7×3
7+21=8
2.a=-18, n=10, an=0, d=?
an=a+(n-d)d
0=-18+(10-1)d
0=-18+9d
9d=18
d=18/9
d= 2...
do same like that .. remaining sums also....
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Answers & Comments
Answer:
1. 28 ,2.2
Step-by-step explanation:
a=7, d=3, n=8
an= a+(n-1)d
=7+(8-1)3
= 7+7×3
7+21=8
2.a=-18, n=10, an=0, d=?
an=a+(n-d)d
0=-18+(10-1)d
0=-18+9d
9d=18
d=18/9
d= 2...
do same like that .. remaining sums also....
Answer:
Sorry for late reply yaar btw
Nice joke.....
Allah Hafiz I going offline because mai ra chemistry paper solve kar na hai...