3 years ago

John states that all trapezoids have at least one line of symmetry.

Mathematics

1 answer:

IrinaK [193]3 years ago

7 0

A
bc i got it right

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Which of these equations has a graph that is tangent to the x-axis at one of its intercepts? Choose all the polynomials that hav

Verdich [7]

Answer:

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Step-by-step explanation:

4 0

4 years ago

Find the sum of a finite geometric sequence from n = 1 to n = 6, using the expression −2(5)n − 1.

vazorg [7]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=-2\\
r=5\\
n=6
\end{cases}
\\\\\\
S_6=-2\left( \cfrac{1-5^6}{1-5} \right)$