Does anyone know how to do this

Mathematics

1 answer:

aev [14]2 years ago

7 0

Answer:

Step-by-step explanation:

An isosceles right triangle has two legs the length x and the hypotenuse equal to x√2.

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$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
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\end{cases}
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$\bf \\\\
-------------------------------\\\\
\textit{sum of a finite arithmetic sequence}\\\\
S_n=\cfrac{n}{2}(a_1+a_n)\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
a_n=\textit{value of the }n^{th}\ term\\
------------\\
n=12\\
a_1=123\\
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\end{cases}
\\\\\\
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