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2 years ago

15

Select the correct answer. Which expression represents the series ? 1+5+25+125+625? creating and solving formulas for geometric

series

1 answer:

Art [367]2 years ago

3 0

Answer:

The given series can be written as

4

∑ (5)^i

i = 0

We know that the series is

1+5+25+125+625

This is equal to

(5)^0 + (5)^1 + (5)^2 + (5)^3 + (5)^4

Thus,

For i from 0 to 4,

We get the general representation.

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Answer:

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Step-by-step explanation:

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LuckyWell [14K]

Answer:

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Step-by-step explanation:

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2 years ago

Use the law of cosines to find the balue of cos 0 . Round to answer to two decimal places

chubhunter [2.5K]

Answer:

C

Step-by-step explanation:

Using the law of cosines then cosΘ is the following quotient

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cosΘ = $\frac{5.8^2+10.5^2-10.9^2}{2(5.8)(10.5)}$

= $\frac{33.64+110.25-118.81}{121.8}$

= $\frac{25.08}{121.8}$ = 0.21 → C

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