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## What is the sum of the geometric sequence 3, 12, 48, … if there are 8 terms?

3, 12, 48, 192, 768, 3072, 12288, 49152 then

3 + 12 + 48 + 192 + 768 + 3,972 + 12,288 + 49,152 =

15 + 48 + 192 + 768 + 3,972 + 12,288 + 49,152 =

63 + 192 + 768 + 3,972 + 12,288 + 49,152 =

255 + 768 + 3,972 + 12,288 + 49,152 =

1,023 + 3,972 + 12,288 + 49,152 =

4,995 + 12,288 + 49,152 =

17,283 + 49,152 =

66,435.

Geometric Sequences and Sums | Example: Sum the first 4 terms of – For K-12 kids, teachers and parents. We can use this handy formula: a is the first term r is the "common ratio" between terms n is the number of terms. So our infnite geometric series has a finite sum when the ratio is less than 1 (and greater than −1).the question is find the sum of the first eight terms in the series 3-12+48-192+… is 1)-13,107 2)-21 consider the infinite geometric series n=1 -4(1/3)^n-1 . i need help with writing the first four Find the common ratio and first term of the series. math. The sum of the 1st nine terms of an…Find the 8th term (a₈) of the geometric sequence: -3, 12, -48, 192. Find the sum of the first 7 terms of the geometric series: a(n) = 1(-4)ⁿ⁻¹. This set is often saved in the same folder as… Algebra 1 Final Exam Review Part 1.

Find the sum of the geometric series 1+1/2+1/4+1/8+…to 12th terms… – Funny how the wrong denominators still got the correct result for that input. I think n=15 is the only value where that's the case (other than for the n = len(l1) #Or do something else here that you wish to do #Note: doing n = l1 here will give you the sum of the entire list if n > length of list sum = 0.00…Calculate the sum to infinity of the series, given that all the terms of the series are positive. S∞ = 12.5. Question 23 (***) The sum of the first two terms of a geometric series is 10 and the third term is 5 .we are asked to find that some of the 1st 7 terms of this sequence. So the first thing you have to decide is is it arithmetic or geometric? So three times. 127 times to when they were in Divide that by 128. Good. Essentially this device before there's about a 380 1 of the actors is 381 over again.

Algebra 1 Ch7-7 Geometric Sequences as Exponential… | Quizlet – You could simply dump the numbers into the formula for a geometric series The geometric sequence rule is times 4. Therefore, find each term until you have 8. 3, 12, 48, 192, 768, 3072 r = 40 8/(-12) so r=-4 working backwards, the 1st term is 3. So the formula is 3*4^(n-a million) for each…The ratio of one term to the term directly following it is always 1:2, or .5. So like, instead of an arithmetic sequence, where you're adding a specific A geometric series represents the partial sums of a geometric sequence. The nth term in a geometric series with first term a and common ratio r…This is the form of a geometric sequence. Substitute in the values of. and. . Remove parentheses. This is the formula to find the sum of the first.