Wiskunde Multiple Choice Vraag

Wat is de oplossing van de vergelijking $\frac{20}{50}=\sqrt{\frac{x}{50}}$ ?	A. 2
	B. 4
	C. 8
	D. 20
	E. 400

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Translation in E N G L I S H

What is the solution of the equation $\frac{20}{50}=\sqrt{\frac{x}{50}}$ ?

Oplossing - Solution

$\frac{20}{50}=\sqrt{\frac{x}{50}}\:\Leftrightarrow\:\frac{2}{5}=\sqrt{\frac{x}{50}}\:\Leftrightarrow\:\frac{4}{25}=\frac{x}{50}\:\Leftrightarrow\:x=\frac{4.50}{25}=4.2=8$