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2 years ago

5

The sum of three numbers is 254.772. We can get the biggest and smallest numbers if we move the decimal point in the middle numb

er two digits to the right and one digit to the left, respectively. What is the middle number?

1 answer:

gayaneshka [121]2 years ago

8 0

Use photo math it helps you with the questions

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2 years ago

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mylen [45]

Answer:

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Step-by-step explanation:

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2 years ago

Find the sum of the first 8 terms of the series. 1/2 + 1 + 2 + 4

Roman55 [17]

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$\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ r=2\\ a_1=\frac{1}{2}\\ n=8 \end{cases} \\\\\\ S_8=\cfrac{1}{2}\left( \cfrac{1-2^8}{1-2} \right)\implies S_8=\cfrac{1}{2}\left( \cfrac{-255}{-1} \right)\implies S_8=\cfrac{255}{2}$

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3 years ago

Read 2 more answers