If t11 = 75 and a = 5, then find common difference 'd'.
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Answer:
7
Step-by-step explanation:
We know that the formula for the nth term is tₙ =a+(n−1)d, where a is the first term, d is the common difference.
It is given that the first term is a=5 and t₁₁=75, therefore,
t₁₁ = a+(n−1)d = 5 + (11-1)d = 75
10d = 70
d = 70 : 10 = 7
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