Answer: 
Step-by-step explanation:
Let be "x" the original volume of the solution (in milliliters) before the acid was added and "y" the volume of the solution (in milliliters) after the addition of the acid.
Set up a system of equations:

Applying the Substitution Method, you can substitute the second equation into the first equation and then solve for "x":
Answer:
$15 in interest
Step-by-step explanation:
sorry if it is wrong. I found 5% of 300 which is 15.
Answer:
2y
Step-by-step explanation:
2x3y + 18xy - 10x2y - 90y
6xy + 18xy - 20xy - 90y
All terms can be factored by y and 2.
Answer:
No because 50 cm would be short of 14 cm required to cover the total perimeter
Step-by-step explanation:
2 meter long string into 4 equal part
1 part = 50 cm
Side length of the square = 16
16 × 4 = 64cm ⇔ Perimeter of the square box
50 < 64
Is that a question or a true or false question..