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Emilie Castaneda
Mathematics
3 December, 12:33
K2=225
A) k=13
B) k = (-13)
C) k=15
D) k = (-15)
+4
Answers (
1
)
Pamela Glass
3 December, 12:56
0
This is basically a direct proportion equation,
y = kx
in this case, it's:
225 = k2
to get k, we have to divide 225 by 2 hence:
112.5 = k
k = 112.5
Since the answer match none of the multiple choice you provided.
You must've written the question wrongly, if you were writing to the power of 2, it means u should have written k^2 = 225.
In this case, it's not a direct proportion question and it's a case of simple algebraic equation.
k^2 = 225
Then
k = + / - 15.
Hence the answer is both C and D
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