$\qquad \qquad \textit{direct joint variation} \\\\ \textit{\underline{y} varies directly with \underline{x} and \underline{z}}~\hspace{8.5em} \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}xz~\hfill } \\\\ \textit{\underline{y} varies directly with \underline{x}, }w^2\textit{ and }z^5~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}xw^2z^5~\hfill } \\\\[-0.35em] ~\dotfill$

$y = kxz\qquad \textit{we know that} \begin{cases} x=2\\ y=12\\ z=5 \end{cases}\implies 12=k(2)(5) \\\\\\ \cfrac{12}{(2)(5)}=k\implies \cfrac{6}{5}=k~\hspace{10em}\boxed{y=\cfrac{6}{5}xz}$

6 0

2 years ago

Look at the picture above please help!!!

IgorLugansk [536]

I think you have to subtract 60% and 80% which you get 20%

7 0

3 years ago

A 3.5 gallon gas can contains 9/10 gallons. how much more gas can be poured in?

Elena L [17]

Answer:

0.35 Gallons.

Step-by-step explanation:

Since there is already 9/10 in it, you can only pour 1/10 in now. 1/10th of 3.5 is 0.35.

3 0

3 years ago