Jonathon and samantha row their canoe 26 miles downstream in 2 hours. after a picnic, they row back upstream. after 3 hours they only travel 15 miles. assuming that they canoe at a constant rate and the river's current is constant, find the speed at which jonathon and samantha can row in still water.

9 mph

Step-by-step explanation:

Given

During downstream it took 2 hr to cover 26 miles

During upstream it took 3 hr to cover 15 miles

Let v be the canoe velocity and be the stream velocity

thus

------1

and

--------2

From 1 & 2 we get

2v=18

v=9 mph

the answer is (-4,-4)

hope this ! : d

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have