johnnyhalusewa
08.10.2021 •
Mathematics
Help me calculate the perimeter of this shape!
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Ответ:
Answer
Find out the value of n .
To proof
As given
y varies directly as x
thus
y = kx
Where k is the constant of proportionality .
As given
y is 180 when x is n
180 = kn
y is n when x is 5
n = 5k
Compare the value of k .
solving
n² = 900
n = √900
n = 30
Therefore the value of n is 30 .
Hence proved