Answer:
x=0
Step-by-step explanation:
If you combine like terms it is x^2 +6x -27=-27
x^2 +6x =0
x^2=0
x=0
If you do 4/7 divide by 2 the answer is 0.2857
Answer:
2.5 gallons of the 20% solution must be replaced by the 36% solution.
Step-by-step explanation: