Step-by-step explanation:
The Answer is in the photo
3x^2-18+5=47
3x^2 = 60
x^2 = 20
x = 4.472 , x = - 4.472
I hope this helps.....
Explanation:
I took this in 9th grade so I know how to do this kind of stuff
There are 540 degrees total in the interior angles of a regular pentagon.
Just so you know, the total degrees of interior angles goes up by 180 degrees.
A triangle is 180 degrees, a quadrilateral 360, and a pentagon 540.
Reeeee.............tooooooooo