Answer:
The system has infinitely many solutions
Step-by-step explanation:
we have
----> equation A
----> equation B
Multiply by -2 both sides equation A

----> equation C
Compare equation B and equation C
The equations are identical (is the same line)
therefore
The system has infinitely many solutions
Is a consistent dependent system
Answer:
$9.50
Step-by-step explanation:
To figure out how much he spent, you have to multiply the number of games by the cost of each game. 5 games x 0.50 for each game = $2.50 spent. Now to find how much he still has, you have to subtract $2.50 from the $12 that he already has and you get $9.50
Answer:
30 km/h
Step-by-step explanation:
usual speed= x km/h
increased speed= x +10 km/h
distance= 360 km
time difference= 3 h
- 360/x= 360/(x+10) +3
- 360/x= (360+ 3x+30)/(x+10)
- 360(x+10)= x(390+3x)
- 360x+3600= 390x+ 3x²
- 3x² + 30 x -3600=0
- x²+10x-1200=0
- x=30 km/h
Is that all the information given?
Answer:
B. Im pretty sure
Step-by-step explanation: