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
MN would be 14.6 because you subtract the other two numbers
Answer:
2x-10=14
2x=10+14
2x=24
x=24/2
x=12.
i guess it cant have infinite solutions.........
false.
It will take the dragon fly 1 1/2 hours to fly 54 miles because if you take 54 and divide it by 36 you get 1.5 but also if you add 36 plus have of 36 which is 18 you get 54. So, the dragonfly will take 1 1/2 hours to fly 54 miles.
Answer:
AB=3
Step-by-step explanation:
tell me if you want detailed proof
