Question

F varies jointly as D and E. Determine F when D=3 E =10 and k =7

Answer 1

The equation for F is,

`\begin{gathered} F\propto DE \\ F=kDE \end{gathered}`

Determine the value of F.

`\begin{gathered} F=7\cdot3\cdot10 \\ =210 \end{gathered}`

Thus value of F is 210.