What is the value of x if 4 : x = x : 16 ?
Answer & explanation
Correct answer: option 2
$\frac{4}{x}=\frac{x}{16}$
cross multiply
$64 = x^2 ⇒ x = 8$
What is the value of x if 4 : x = x : 16 ?
Correct answer: option 2
$\frac{4}{x}=\frac{x}{16}$
cross multiply
$64 = x^2 ⇒ x = 8$