Cos2x + cosx + 1=0
lam on dum

Step-by-step explanation:

cos(2x)+cos(x)+1=0{2cos^2(x)-1}+cos(x)+1=0

let cos x=y

2y^2+y+1=0

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

9 x 8 divided by (5-3)=36