3 years ago

What is the center of the circle represented by this equation? x2 + (y + 9)2 = 25

Mathematics

1 answer:

Pepsi [2]3 years ago

3 0

(0,-9). What makes x zero and what makes y zero

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3 years ago

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uranmaximum [27]

$\bf \textit{volume of a con}\\\\
V=\cfrac{\pi r^2 h}{3}\qquad 
\begin{cases}
h=height\\
r=radius=\frac{diameter}{2}\\
d=diameter\\
----------\\
d=5.7\\
r=\frac{5.7}{2}=2.85\\
h=12
\end{cases}\implies V=\cfrac{\pi 2.85^2\cdot 12}{3}\\\\
-------------------------------\\\\$

$\bf \textit{now, that's the original, now, let's scale "r" and "h" by 1.5}
\\\\\\
V=\cfrac{\pi r^2 h}{3}\qquad
\begin{cases}
r=2.85\cdot 1.5\\
h=12\cdot 1.5\\
----------\\
r=4.275\\
h=18
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3 years ago