Simplifying
3[x + -1] = 12
Reorder the terms:
3[-1 + x] = 12
[-1 * 3 + x * 3] = 12
[-3 + 3x] = 12
Solving
-3 + 3x = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '3' to each side of the equation.
-3 + 3 + 3x = 12 + 3
Combine like terms: -3 + 3 = 0
0 + 3x = 12 + 3
3x = 12 + 3
Combine like terms: 12 + 3 = 15
3x = 15
Divide each side by '3'.
x = 5
Simplifying
x = 5
Answer:
see explanation
Step-by-step explanation:
Co terminal angles are angle ± 2π, that is
+ 2π
= + 
= 
and
- 2π
= - = - 
You're first one is correct, with the increase of Petroleum being the most at 3.4%
However, the second one is incorrect, because you are finding the percentage increase, or 12.7 - 9.3 = 3.4%
So the second one is 3.4
hope this helps
Answer:
True
Step-by-step explanation:
