Answer:
B
Step-by-step explanation:
Slope is the same(x) therefore they are parallel
We can do the elimination method to find the solution for this problem. The elimination method involves adding the two equations together to get rid of a like term.
x + 2y = 7
+ x - 2y = -1
—————————
2x = 6
Now that we eliminated 2y because they cancel out, we are left with 2x = 6. Divide both sides by 2 in order to get x.
The answer is: x = 3.
Now that we know the numerical value of x, all we have to do is plug x into either system of equation in order to find the numerical value of y.
x + 2y = 7
3 + 2y = 7
2y = 4
y = 2
The solution to the problem is (3, 2).
since a diameter is twice as long as the radius, this one is also
2r.
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
