Answer/Step-by-step explanation:
Factor this. GCF=2
2(2cos2x+cos x-1)=0
2(2cos x -1)(cos x+1)=0 Set each factor equal to zero and solve
2cos x -1=0 Add 1 to both sides
2cos x =1 Divide by 2
cos x =1/2
x=π/3
x=5π/3
cos x+1=0 Subtract 1 from both sides
cos x=-1
<u><em>x = π</em></u>
<u><em></em></u>
Answer:
Bottle unit: 8.14
Dollar unit: $0.12
Step-by-step explanation:
Dividing the equation, bottle on top for bottle and dollars on top for dollar.
Answer:
pi, the square root 72
Step-by-step explanation:
