Is that the full question? I simplified it to 2x^2 -5x +18 when you plug x+3 in for the variable (x) in the expression. I’m honestly not sure when to go from there. Hope that helps with something. Sorry I couldn’t do more
Ignore above
your equation is 2(cosx)^2-3cosx+1=0
use quadratic formula to get results
you will end up with
cosx=1 or cosx=1/2
so, x=0 or x=pi/3
Answer:
18 nuts in 12 minutes, 13.5 nuts in 4 minutes and 90 nuts in one hour
Step-by-step explanation:
12 min :
12/6 = 2
2 x 9 = 18 nuts in 12 minuts
4 min:
6/4 = 1.5
1.5 x 9 = 13.5 nuts in 4 minutes
(round to 13 if whole nuts only)
1 hour:
1 hour = 60 mins
60/6 = 10
9 x 10 = 90 nuts in one hour