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D=-4,a7=4 find a

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D=-4,a7=4 find a

Posted by Ajit Singh 7 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Ankeet Pandey 7 years, 1 month ago

Given :d=-4 and a7=4 Sol- a7=a+6d 4=a+6(-4) 4=a+(-24) therefor a=-24-4 a=-28

Atulya Kumar 7 years, 1 month ago

Given: d=-4 and a7 =4 Therefore we can write a7=a+6d -4=a+6×4 -4=a+24 a=-24-4=-28 Hence we get a=-28

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