3 years ago

BRAINLIEST AND 20 POINTS

Mathematics

2 answers:

Svetach [21]3 years ago

7 0

I believe you would use tan since you are using an opposite side and an adjacent side

tan(60°) = L/20 m

tan(60°) = 1.732

1.732*20 = 34.64

Also, this triangle is a 30, 60, 90 triangle (see attached image) in which 20 m = a. 20*√3 = 34.64.

I hope this helps!! :)

dalvyx [7]3 years ago

5 0

The answer is D because that is the only possible answer.

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Determine 7th term in the geometric sequence whose first term is 5 and whose common ratio is 2.

blagie [28]

$\bf n^{th}\textit{ term of a geometric sequence}
\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=5\\
r=2\\
n=7
\end{cases}
\\\\\\
a_7=5\cdot 2^{7-1}\implies a_7=5\cdot 2^6\implies a_7=320$