Saturday

August 30, 2014

August 30, 2014

Posted by **jjj** on Monday, April 4, 2011 at 1:00pm.

- algebra -
**Damon**, Monday, April 4, 2011 at 1:26pmt going upstream

(5 - t) going downstream

speed upstream = (v-3)

speed downstream = (v+3)

36 = t(v-3)

36 = (5-t)(v+3)

36 = t v - 3 t

t = 36/(v-3)

36 = [5 - 36/(v-3)] (v+3)

36 = 5(v+3) - 36(v+3)/(v-3)

(21 - 5 v)(v-3) = -36(v+3)

check, multiply out and solve quadratic for v

**Related Questions**

math - a steamboat goes 24 miles upstream, the trip takes six hours. the water ...

math - A boat travels down the river in 2.8 hours. The return trip up river ...

math - A boat travels down the river in 2.6 hours. The return trip up river ...

Math - Alicia went on a steamboat ride up the Mississippi River. The boat ...

math - Alicia went on a steamboat ride up the Mississippi River. The boat ...

Math - Alicia went on a steamboat ride up the Mississippi River. The boat ...

algebra - 36 Upstream, downstream. Junior’s boat will go 15 miles per hour in ...

algebra - Show a complete solution. Upstream, downstream. Junior’s boat will go ...

Algebra - A motorboat can maintain a constant speed of 26 miles per hour ...

NEED HELP!! ALGEBRA - A motorboat can maintain a constant speed of 26 miles per ...