Answer:
2 km/h
Step-by-step explanation:
- distance = speed × time
- time = distance/speed
Let c represent the speed of the current of the river in km/h. Then the speed of the boat upstream is (10-c). In 3/4 hour, the distance traveled upstream is ...
... distance upstream = (3/4)·(10 -c)
The time taken to travel the same distance downstream is given as 3 hours. The speed in that direction is c, so we have ...
... 3 = distance upstream/c = (3/4)(10 -c)/c
Multiplying this equation by 4c, we get ...
... 12c = 3(10 -c)
... 15c = 30 . . . . . . . . add 3c
... c = 2 . . . . . . . . . . . divide by 15
The speed of the river current is 2 km/h.
Answer:
its 5
Step-by-step explanation:
it five bc look at the mesuarement
Answer: I think it is going to be 42.5
Step-by-step explanation: I think that because is you divide the 29 by 7.5 you get 3.86. Multiply the 11 by 3.86 and you get 42.46. If you round to the nearest tenth that would be 42.5
1.35/12=0.1125, rounds to about $0.11.
Each pencil was about $0.11.
Answer:
A
Step-by-step explanation:
I think answer 5 should be ∠1 is congruent ∠2