Answer:
The speed and time are directly proportional in that the higher the speed the lesser the time and vice versa.
The constant is the total distance which is 180 km
Step-by-step explanation:
Step one:
given data
The distance between the two cities is 180km
1.The distance was covered by a car at the rate of 50km/h
The time taken will be
velocity= distance/time
time= distance/velocity
time= 180/50
time= 3.6 hours
2.The distance was covered by a bus 45km/h
The time taken will be
velocity= distance/time
time= distance/velocity
time= 180/45
time= 4 hours
3.The distance was covered by a bicycle at 25km/h
The time taken will be
velocity= distance/time
time= distance/velocity
time= 180/25
time= 7.2 hours
Answer:
Step-by-step explanation:
Given:
Distribute to remove parentheses:
For simplification and clarity, reduce all mixed numbers to simplified common fractions:
Combine like terms:
Add 6/5 to both sides, then add 9/5x to both sides:
Divide both sides by -3/5 to isolate x (recall dividing by a number is equal to multiplying by its reciprocal):
Answer:
a=200;110;101andb=decreasing
Step-by-step explanation:
a.(100×10+1000)/10=200
(100×100+1000)/100=110
(100×1000+1000)/1000=101
Answer:
C
Step-by-step explanation:
