The answer is A. X=-1/3 or x=2/3
Answer:
The 3rd one, The 1st one and The last one.
Step-by-step explanation:
Answer: the chiled is 3 years old
Step-by-step explanation:
2t+5v=37 and 4t+3v=39
Solve the first for t
t=18.5-2.5v and use this t in the second equation...
4(18.5-2.5v)+3v=39
74-10v+3v=39
-7v=-35
v=$5.00 and since t=18.5-2.5v
t=$6.00
So tuna sandwiches cost $6.00 and vegetarian sandwiches cost $5.00.