The train will have been traveling for 4 hours
train A=45,90,135, 180
train B=0,60,120,180
Answer:2m^2+mn+2m+9n-3
Step-by-step explanation:
m(2+n-m)+3(3n+m^2-1)
open brackets
2m+mn-m^2+9n+3m^2-3
Collect like terms
3m^2-m^2+mn+2m+9n-3
2m^2+mn+2m+9n-3
Here it is
67^2 = 67*67 = 4489
This means it has infinite solutions congrats. When solving algebraic equations you can find one solution, no solutions. When you have infinite solutions that means that equations has multiple things that can equal it.
V < -7
Divide by -2, then flip the inequality sign since you are dividing with a negative.
