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Akimi4 [234]
3 years ago
8

What is the explicit formula that represents the geometric sequence -2, 8, -32, 128

Mathematics
1 answer:
lubasha [3.4K]3 years ago
3 0
a_n=a_1r^{n-1}\\\\a_1=-2;\ a_2=8;\ a_3=-32;\ a_4=128\\\\r=a_2:a_1\to r=8:(-2)=-4\\\\\boxed{a_n=-2\cdot(-4)^{n-1}}
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Common factors of 50,30,100
umka21 [38]
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3 years ago
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Ede4ka [16]

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Step-by-step explanation:

5 0
3 years ago
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5 0
3 years ago
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PLz answer before 11:59 pm
Tpy6a [65]

Answer:

SA = 2520 ft^2

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b = 29ft

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A_{B} = s(s﹣a)(s﹣b)(s﹣c)

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SA= (21 * 30) + (29 * 30) + (20 * 30) +

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SA = 2520 ft^2

6 0
3 years ago
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irakobra [83]
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3 years ago
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