The speed of boat is 11 km/h in still water and speed of current is 7 km/h.
Step-by-step explanation:
Combined speed of boat and current while going down = 18 km/h
Combined speed while coming up = 4 km/h
Let,
Speed of boat = x
Speed of current = y
As boat and current were in same direction while going down,
x+y = 18 Eqn 1
We will subtract the speed of current while coming up because both the boat and current will be in opposite directions.
x-y = 4 Eqn 2
Adding Eqn 1 and Eqn 2
Dividing both sides by 2
Putting x=11 in Eqn 1
The speed of boat is 11 km/h in still water and speed of current is 7 km/h.
Keywords: linear equation, speed
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Answer:
combine -3-1
if you want to solve for x then you would move the -14 to the left buy adding 14 to both sides.
your equation there will be
then you will divide -2 on both sides
finally x will equal
Answer:
Step-by-step explanation: fhfhbrdbvrbdbdvdbdvdcdvdvd
Using the y=mx+b equation (i forget what it’s exactly called) the equation will be y=-1x-1
Answer: 100
Step-by-step explanation:
Because 25x4= 100 sorry if it’s wrong