Find d for the arithmetic series with S17=-170 and a1=2
1 answer:
So, we know the sum of the first 17 terms is -170, thus S₁₇ = -170, and we also know the first term is 2, well

well, since the 17th term is that much, let's check what "d" is then anyway,
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It would also be 42 because the triangle is divided in half.
Yes not sure though but I want to say yes
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Step-by-step explanation:
You just need to multiply 1/2 by 2 to give you a common denominator:
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From there you can add the numerators:
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HTH :)