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3 years ago

10

An amphitheatre has 23 seats in the first row, 25 in the second, 27 in the third, and so on, for 32 rows. How many seats are in

the amphitheatre? The amphitheatre has seats

1 answer:

dezoksy [38]3 years ago

3 0

It has 1,995 seats.

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$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ 3 &,& -4~) 
% (c,d)
&&(~ 5 &,& 1~)
\end{array}
\\\\\\
% slope = m
slope = m\implies 
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\\\\\\
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\begin{array}{llll}
\textit{now let's multiply both}\\
\textit{sides by }\stackrel{LCD}{2}
\end{array}
\\\\\\
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