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babymother [125]
3 years ago
8

What is the sum of the geometric sequence 3, 15, 75, … if there are 8 terms?

Mathematics
2 answers:
lidiya [134]3 years ago
6 0

Answer:

292,968

Step-by-step explanation:

Step 1: Use geometric sequence formula s_n=\frac{a1r^n}{1-r}

S_n & n= the sum of geometric sequence & terms in total (8)

r= common ratio (5)

a_1= first term in sequence (3)

<h2>s_8=\frac{3(5)^(^8^)}{ 1-5 }\\s_8=\frac{(3)390625}{-4}\\s_8= \frac{1171875}{ -4 }\\s_8=292968</h2><h2 />

Firlakuza [10]3 years ago
4 0
If you would like to know the sum of the geometric sequence, you can calculate this using the following steps:

3, 15, 75, 75 * 5 = 375, 375 * 5 = 1875, 1875 * 5 = 9375, 9375 * 5 = 46875, 46875 * 5 = 234375

<span>3 + 15 + 75 + 375 + 1875 + 9375 + 46875 + 234375 = </span>292,968

The correct result would be 292,968.
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3 years ago
7/12 × 6\14 please help
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7/12*6/14
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3 years ago
What is the equation of the quadratic graph with a focus of (8, −8) and a directrix of y = −6?
yarga [219]
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4 0
2 years ago
KLMN is a parallelogram,
Aleonysh [2.5K]

Answer:

Ok soo.

Step-by-step explanation:

sum of two adjacent angles of parallelogram is 180

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as AK bisects angle K and LA bisects angle L

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so, from above two equations,

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❂✨Answered By Tokyo ✨❂

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3 years ago
If x = -1, x cubed + x
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-2

Hope this helps!
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3 years ago
Read 2 more answers
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