Amotorboat traveled 35 km upstream on a river and then up an adjacent stream for 18 km, spending 8 hours on the entire trip. the speed of the river’s current was 1 km/hour slower than the speed of the stream’s current. find the speed of the current of the river, if the speed of the motorboat in still water is 10 km/hour.

 3 mph

Step-by-step explanation:

Use distance (d) = rate (r) x time (t)

The rate is the rate of the boat in still water minus the current.  The current is subtracted since you are going upstream.

Since the rate of the Stream is 9 - c, the current cannot be 9.375 so that is an erroneous solution.   Therefore, the current is 3

49%

step-by-step explanation:

when you realize that you dont know just realize i just took a test and im so smart

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b