The speed of the current in the river is 4 mph about travel 17 miles downstream with the current in the this river in the same time that it travels 9 miles upstream against the current find the speed of the boat in the Stillwater

Step-by-step explanation:

b = speed of boat in still water

traveling downstream, the boat goes (b+4 miles)/hour.

traveling upstream the boat goes (b-4 miles)/hour.

Time to travel 17 miles downstream = 17 miles × (1 hour)/(b+4 miles)

Time to travel 9 miles upstream = 9 miles × (1 hour)/(b-4 miles)

17 miles × (1 hour)/(b+4 miles) = 9 miles × (1 hour)/(b-4 miles)

17/(b+4) = 9/(b-4)

cross-multiply denominators:

17(b-4) = 9(b+4)

17b - 68 = 9b + 36

8b = 104

b = 13 miles per hour

so the possibilities of the measurement of the side of the triangle are either it is longest side or not the longest side

when it is the longest side

s < 25 + 35s < 60

if it is not the longest side

35 < 25 + s10 < sso 10 < s < 60so the perimeter70 < p < 130