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LenaWriter [7]
4 years ago
15

a varies directly as b and inversely as the square of c. If a = 197 when b = 5 and c = 5, find a if b = 3 and c = 3

Mathematics
1 answer:
SSSSS [86.1K]4 years ago
5 0
With the information you provided, we can find an equation.

A=kB/(C^2)             (k is a constant)

197= 5k/(5^2)   
197=5k/25
197=k/5
k= 985

So find a if b=3 and c=3

A= 3(985)/(3^2)
A= 2955/9 is your answer.


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Fiona wrote the linear equation y = 2/5 X -5. When Henry wrote his equation they discovered that his equation had all the same S
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The equation of the graph is given as y = (2/5)x - 5.

You have to figure out which of the choices equals the equation given,
y = (2/5)x - 5.
You could solve each of the answer choices for y, but since each choice is in the format x - (m)y = b, you can put the given equation in that format too.

y= \frac{2}{5}x - 5 \\ 
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3 years ago
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