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2 years ago

6

These lines are perpendicular. Is this statement true or false?

1 answer:

umka2103 [35]2 years ago

5 0

False they are not exact recipricals

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What is 0.000084 sceincetific notation help me out and can u explain how to get the answer

Kaylis [27]

Answer:

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Step-by-step explanation:

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3 years ago

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iogann1982 [59]

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jok3333 [9.3K]

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2 years ago

What is the sum of the first 4 terms of a geometric sequence that has a first term of 2 and a ratio (multiplier) of 8?

taurus [48]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ a_1=2\\ r=8\\ n=4 \end{cases} \\\\\\ S_4=2\left( \cfrac{1-8^4}{1-8} \right)\implies S_4=2\left( \cfrac{-4095}{-7} \right) \\\\\\ S_4=2(585)\implies S_4=1170$

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2 years ago