Question

5. An arithmetic sequence contains 20 terms. Sum of the first and 20th terms is 88.
a) What is the sum of the second and the 19th terms?
b) If the 10th term is 42, what is the 11th term?
c) What is the common difference of the sequence?
d) Find the first term.
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Answer 1

Answer:

Attached below

Step-by-step explanation:

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