Answer:
K=-60
Explanation:
[tex]9=-\frac{3k}{20} \\\\9*20=-3k\\9*20=-3k\\180=-3k\\-\frac{180}{3}= k\\ k=-60[/tex]
To solve this proportion, we can use cross products.
So we have (9)(20) = (-3)(k) or 180 = -3k.
Now just divided both sides by -3 and we find that -60 = k.
I have shown my work in the image attached.
