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Ksju [112]
3 years ago
12

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Mathematics
1 answer:
Talja [164]3 years ago
5 0
Idk really I enjoyed this mathematics
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The quantity y varies directly with the square of x and inversely with z. When x is 9 and z is 27, y is 6. What is the constant
ira [324]
\bf \qquad \qquad \textit{double proportional variation}
\\\\
\begin{array}{llll}
\textit{\underline{y} varies directly with \underline{x}}\\
\textit{and inversely with \underline{z}}
\end{array}\implies y=\cfrac{kx}{z}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------

\bf \stackrel{\textit{\underline{y} varies directly with the square of \underline{x} and inversely with \underline{z}}}{y=\cfrac{kx^2}{z}}
\\\\\\
\textit{we also know that }
\begin{cases}
x=9\\
z=27\\
y=6
\end{cases}\implies 6=\cfrac{k9^2}{27}
\\\\\\
\cfrac{27\cdot 6}{9^2}=k\implies 2=k
4 0
3 years ago
Quick anyone know the answer to this problem? Will give brainiest
natka813 [3]

Answer:

I think its b.

5 0
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Ronch [10]

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Solution in photo

Step-by-step explanation:

6 0
2 years ago
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lutik1710 [3]
1. Match to B
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4 0
3 years ago
Hi right now im doing homework about common denominators and for some reason I cant understand how to do it
goldenfox [79]
It would be great if you added some more details, but for common denominators you try to find the least common number that the 2 or more of the numbers you got have!
For example:
1/2 and 2/3 if you multiply 2 by 3 and 3 by 2, they both are 6, so you would multiply 1/2 both by 3 to make it into 3/6 and 2/3 by 2 to make it into 4/6!
6 0
3 years ago
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