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Anastaziya [24]
3 years ago
7

Write an equation that models the sequence -2, -6, -18, -54, ... A) y = -2x B) y = -2x2 C) y = -3x D) y = -2*3x - 1

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
6 0

Answer:

<h2>a(n) = -2*(3)^(n-1)</h2>

Step-by-step explanation:

The sequence -2, -6, -18, -54, ... is a geometric one, since each new term is 3 times the previous term.  In other words, 3 is the common ratio.

The general formula for a geometric sequence is

a(n) = a(1)*(r)^(n - 1), where r is the common ratio and a(1) is the first term.

Here,

a(n) = -2*(3)^(n-1)

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No of ways 14 people can be arranged in 14 seats = 14!

Probability that exactly one woman is in one of the first 5 seats = 72,000 / 14! = 0.0000008259 = 0.000083%
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</span>         ...56

When a small number is on top of a bigger number, borrow 1 number from the number next to it (in this case, 0 is smaller than 5, so you must borrow 1 number from 9, making it to 8), then add the small number by 10 (0+0=10)
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Do the same thing with 4 and 1.

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<em><u>Answer: $535.56</u></em>
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