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2 years ago

9

Mohamed packs food in a cooler for a camping trip. He makes a tally chart to record what food he is bringing. Based on the tally

chart, how many pieces of food are in the cooler in total

1 answer:

VLD [36.1K]2 years ago

4 0

Nobody will be able to give an accurate response to this question without seeing the tally chart sorry

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How many terms are in the arithmetic sequence 9, 2, −5, . . . , −187?

Fantom [35]

9, 2, -5... so is going down by 7 each time, meaning the "common difference" is -7.

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
a_1=9\\
d=-7\\
a_n=-187
\end{cases}
\\\\\\
-187=9+(n-1)(-7)\implies -187=9-7n+7
\\\\\\
7n=9+7+187\implies 7n=203\implies n=\cfrac{203}{7}\implies \boxed{n=29}$

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Step-by-step explanation:

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The total bill for breakfast was $81.30. The group of friends

mr_godi [17]

Answer:

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creativ13 [48]

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