The correct option about the proof is C. Both Amanda and Stephen are correct.
<h3>How to illustrate the information?</h3>
It should be noted that both Amanda and Stephan are correct as they are taking two different pairs of supplementary angles.
Amanda's proof is that he takes (∠1 and ∠4) and (∠3 and ∠4)as the supplementary angles and writes ∠1 + ∠4 = 180° and ∠3 + ∠4 = 180°,
Stephan's proof is that he takes (∠1 and ∠2) and (∠3 and ∠4) as the <em>supplementary</em> angle pair.
Therefore, the correct option is C.
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Hello,
![u_{1}=3](https://tex.z-dn.net/?f=%20u_%7B1%7D%3D3%20)
![u_{2}=3*r](https://tex.z-dn.net/?f=%20u_%7B2%7D%3D3%2Ar%20)
![u_{1}+u_{2}=15=3(1+r)](https://tex.z-dn.net/?f=%20u_%7B1%7D%2Bu_%7B2%7D%3D15%3D3%281%2Br%29%20)
==> 1+r=5==>r=4
3+3r+3r²+3r^3+...+3r^6=3(1+r+r²+...+r^6)=3*(r^7-1)/(r-1)=4^7-1=16383
Square piramid ,triangle prism.
Answer:
The answer would have to be B
Answer:
a 1/10 10%
Step-by-step explanation: