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4569
@4569
July 2022
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the sum of first n terms of an A.P. is 5n2-8n. find the A.P. and hence find its 15th term
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Pranjal01
Hope this helps you.
Pls mark as brainliest:)
24 votes
Thanks 28
Pranjal01
Can u please write the full question
Pranjal01
Your question isn't clear
Pranjal01
....
4569
solve the following equation and give your answer correct to 3 significant figure: 5x2-3x-4=0
4569
can you plz help me..?
Pranjal01
Sure
Pranjal01
x={-b∓√(b2-4ac)}/2a
={3∓√(9+80)}/10
x=(3+√89)/10. Or. x=(3-√89)/10
x=1.243 Or. x=-0.643
Hope it helps
4569
thank you so much ...u r the greatest help for me
4569
for an A.P., the sum of its term is 60, common difference is 2 and last term is 18. find the number of term in A.P.
4569
plz answer this...
princerawat00000
All the best for your board exams
13 votes
Thanks 6
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Answers & Comments
Pls mark as brainliest:)
={3∓√(9+80)}/10
x=(3+√89)/10. Or. x=(3-√89)/10
x=1.243 Or. x=-0.643
Hope it helps
All the best for your board exams