Answer:
3/8 hours
Step-by-step explanation:
distance=speed/time=120/4=30km
time=distance/speed=30/80=3/8
Answer:
22,5 km
Step-by-step explanation:
Step-by-step explanation:
the answer is 2/7 2578 (25510 - just positive
Answer:
4
Step-by-step explanation:
Answer:
x=8,y=-1
Step-by-step explanation:
x-2y=10
x=10+2y
10+2y+3y=5
5y=-5
y=-1
x-2(-1)=10
x=8