4. i) Determine whether each series is arithmetic. ii) If the series is arithmetic, calculate the sum of the first 25 terms. a) -5 + 1+ 7 + 13 + ... b) 2 + 10 + 50 + 250 + .. c) 1+1 + 2 + 3 + ... d) 18 + 22 + 26 + 30 + ... e) 31 + 22 + 13 + 4 + ... f) 1- 3 + 5 – 7 + ...

Q: 4) -16 – 8 – 4 - 2.. A) -32 B) -33 D) 2 C) No sum

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Q: 1.) 1, 8, 2, 9, 2.) 2, 11, 9, 18, 3.) 5, 4, 8, 7, 4.) 8, 14, 9, 15, 5.) 6, 14, 9, 17,

A: To fill the blanks in the given series.

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Q: 12) Given a₁ = 243 and ax+1 = ak a) Write the first 5 terms of the sequence. b) What type of…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

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A: Explanation of the solution is given below....

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Q: 2. For each arithmetic series, state the values of a and d. Then, determine the sum of the first 20…

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Q: 11) Given a₁ = -2 and ak+1= ak +4. a) Write the first 5 terms of the sequence. b) What type of…

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Q: What is the sum of the first 19 terms of the series 2 - 5 + 12.5 - 31.25 + ..

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Q: QI) A: The geometrie series (.... +7.5+3.75+...............) has sum of 240. Write first ten terms…

A: Given : Geometric series with two terms (....... +7.5 + 3.75 +......)  Sum of the series = 240 To…

Q: 11) -3 + 15 – 75 + 375..., n= 8 12) 2+8 + 32 + 128..., n= 8 13) a, = 1, r=4, n=7 14) a = 3, r=2, n=7

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Q: Find the indicated unknown for each sequence or series. a) Given the 1st term and the last term, a1…

A: a. givena1=-11a85=493this is a arithmatic progression where we have to calculate dformula of nth…

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Q: 2. 5, 7,9, .. , 27

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