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svp [43]
2 years ago
11

What is ∑n=16[4(−5)n−1] equal to?

Mathematics
1 answer:
-Dominant- [34]2 years ago
4 0

Answer:

This  will be the sum of a geometric series where the first term is 4

The common ratio  is -5

And we will have 6 terms.....so....the sum is

first term   [ 1  -  common ratio^number of terms ] / [ 1 - common ratio ]  =

4  [1 - (-5)^6]  /  [ 1  - -5 ]  =

4 [ 1 - 15625 ] / 6  =

(2/3) ( -15624 )  =

-10416

Step-by-step explanation:

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Lady_Fox [76]

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3 years ago
The recursive rule for a sequence is an=an-1+7, where a1=15.What is the explict rule for this sequence
posledela

well, the recursive rule of aₙ = aₙ₊₁ + 7, where a₁ = 15, is simply saying that

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5 0
3 years ago
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Alex17521 [72]
The direct variation between x and y may be written as,
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Answer:

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