Answer:

Step-by-step explanation:
Solve for x;
2x - ( x - 2 ) = 4x
distribute minus sign through parantheses
combine like terms
subtract x from both side
- x - x + 2 = 4x - x
- 2 = 3 x
Divide each side by 3


Get the same base number like 9x4 = 36
Lets x = # pounds of coffe
70 - 8.06x = 37.76
- 8.06x = - 32.24
x = 4
Answer
4 lbs
Answer:
A
Step-by-step explanation:
If this is supposed to be

Then this can simply be reduced to

by the double angle formula for cosine