Answer:

Step-by-step explanation:

Y - Y divided by X - X, the Y is 5 and the X is 2 (Rise over Run)
2/3 is the answer. Try not to overthink these answers because they’re usually quite simple in the end. :)
A) No solutions
B) It's because the question gives you that both lines have the same slope. Remember that having the same slope makes the two lines parallel, which means they'll never intersect.
Answer:
22 millilitres of 13% solution
23 millilitres of 19% solution
Step-by-step explanation:
A + B = 45
13A + 19B = 45 x 17 = 765
-13A - 13B + 13A + 19B = -650 + 765 = 115
5B = 115
B = 23
22 + 23 = 45
A = 22