Find the 63rd term of the arithmetic sequence -1, 5, 11,...

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the 63rd term is - 176

Step-by-step explanation:

In an arithmetic sequence, consecutive terms differ by a common difference. The formula for determining the nth term of an arithmetic sequence is expressed as Tn = a + (n - 1)d Where a represents the first term of the sequence. d represents the common difference. n represents the number of terms in the sequence. From the information given, a = 10 d = 7 - 10 = 4 - 7 = 1 - 4 = - 3 n = 63 We want to determine the value of the 63rd term, T63. Therefore, T63 = 10 + (63 - 1) × - 3 T63 = 10 - 186 = - 176  

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$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

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step-by-step explanation: