Answer:
The answer is k = 28
Step-by-step explanation:
[tex]\frac{12}{k}=\frac{18}{42}[/tex]
Cross multiply. Remember, [tex]\frac{a}{b}=\frac{c}{d}[/tex] ⇒ ad=bc
[tex]\frac{12}{k}=\frac{18}{42}[/tex] ⇒ k·18=12·42
k·18=12·42
Simplify
18k=504
÷18 on both sides
k=504÷18
Simplify
k=28
