Question

Can you help me on what 6x equals? (Grade 10, angles)

Answer 1

First we need to find the value of x, we can use the fact that the sum of the interior angles of a quadrilateral is 360°

`6x+6x+9x+9x=360`
`\begin{gathered} 30x=360 \\ \end{gathered}`

then we isolate the x

`x=(360)/(30)`

`x=12`

then for 9x and 6x, we substitute the value of x=12

`6(12)=72`
`9(12)=108^{}`

if x =12, therefore, the angle 6x=72° and the 9x=108°