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Nikolay [14]
2 years ago
6

The first term of an Arithmetic progression is 3and the last term is 9, find the number of terms in the progression if the commo

n difference is 3/2​
Mathematics
1 answer:
makvit [3.9K]2 years ago
7 0

Answer:

n = 5 terms

Step-by-step explanation:

An = a1 + (n-1)d

9 = 3 + (n-1) 3/2

9 = 3 + 3/2n - 3/2

9 = 3/2 + 3/2n

9 - 3/2 = 3/2n

(15/2) / (3/2) = n

30/6 = n

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\large\underline{\underline{\red{\rm\blue{\longmapsto} Step-by-step\: Explanation:-}}}

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