Answer:
Step-by-step explanation:
Compare and contrast oceanographers and geologists.
4x - y = 6
2x - y/2 = 4 /multiply both sides by 2 to get rid of the fraction
4x - y = 6
4x - y = 8
This system has no solution because it contradicts itself.
The answer would be the second one, you can immediately cross off the first one and 3rd one, 2 x 200 = 400 - 300 = 100 :)
First subtract the two numbers:
8 - 5 = 3
Now divide this to the original:
3 / 5 = 0.6
Multiply by 100:
0.6 * 100 = 60%