X + y = 19
x - y = -7
Subtract both
2y = 26, y = 13
Plug into first equation
x + 13 = 19
x = 6
Solution: x = 6, y = 13
She has 860 dollars after vacation
Answer:
(16,1)
Step-by-step explanation:
A)120 cubic centimeters :)
In the box containing the 2 plain pencils and 2 pens, there would be a 50% chance of getting a pen. In the other box containing 7 color pencils and 3 crayons there would be a 30% chance of getting a crayon.
