3 years ago

How many liters are in a gallon?

Mathematics

1 answer:

earnstyle [38]3 years ago

7 0

3.78 liters in one gallon.

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Multiply the amount hiked by 2.

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3 years ago

What is the sum of the first 6 terms of this geometric sequence? –4, –16, –64, –256, …

MatroZZZ [7]

$a_1=-4;\ a_2=-16;\ a_3=-64;\ a_4=-256;\ ...\\\\r=\dfrac{a_{n+1}}{a_n}\to r=\dfrac{a_2}{a_1}\to r=\dfrac{-16}{-4}=4$

The formula of the sum of a geometric sequence:

$S_n=a_1\cdot\dfrac{1-r^n}{1-r}$

We have:

$a_1=-4;\ n=6;\ r=4$

substitute:

$S_6=-4\cdot\dfrac{1-4^6}{1-4}=-4\cdot\dfrac{1-4096}{-3}=-4\cdot\dfrac{-4095}{-3}=-4\cdot1365=-5460$

Answer: C. -5460

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3 years ago

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lesya [120]

Answer:

Step-by-step explanation:

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Peter and Jane have some money in the ratio 1:3

dexar [7]

Peter=x
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The point that is equidistant<span> to all sides of a </span>triangle is <span>called the incenter.

</span>

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3 years ago