The sum of first and 21st term of arithmetic sequence is 140.find 11th term and write the sequanse if the 1st term is 10
Answers
Answered by
3
Step-by-step explanation:
a+ a+(21-1)d=140
2a+20d= 140
10+10d=70
d=6
10, 16, 22
Answered by
0
Step-by-step explanation:
picture mea answer k baad
10d=70-10
10d=60
d=60/10
d=6
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