What is the sum of a 30–term arithmetic sequence where the first term is 74 and the last term is –100?
Stacey Warren - Expert brainly.com
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probably you can use the formula sum of terms = (a+l)*n/2
where a = first term
l = last term
n = number of terms
i think you've got all the unknowns what you need to do is to substitute the numbers into the formula and get the answer
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