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3 years ago

If y = kx, what is the value of k if y = 20 and x = 0.4? A)5 B)8 C)9.6 D)50

Mathematics

2 answers:

lara31 [8.8K]3 years ago

7 0

Given expression :

y = kx

let's plug the value of x as 0.4 and y as 20 in the given equation :

20 = 0.4k

k = 20 ÷ 0.4

k = 50

correct choice - D. 50

JulsSmile [24]3 years ago

5 0

$\\ \sf\longmapsto y=kx$

$\\ \sf\longmapsto k=\dfrac{y}{x}$

put values

$\\ \sf\longmapsto k=\dfrac{20}{0.4}$

$\\ \sf\longmapsto k=50$

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Step-by-step explanation:

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In this question:

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Answer:

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Therefore, y:x = 3:11

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