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3 years ago

A) 15 B) 5 C) 12 D) 3

Mathematics

2 answers:

bulgar [2K]3 years ago

6 0

The answer is: C(12)

Contact [7]3 years ago

3 0

By exterior angle of triangle:
17x+4+8x+1=80
x=3

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2 years ago

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3 years ago

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Step-by-step explanation:

Given

$y\ \alpha\ \frac{1}{x^2}$

Required

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Where k is the constant of proportionality

When x decreased by 50%

$Y = \frac{k}{(x - 0.5x)^2}$

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$Y = \frac{k}{0.25x^2}$

Expand

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Substitute $\frac{k}{x^2}$ for y

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<em>The percentage in y is 300%</em>

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3 years ago