applications involving quadratic
posted by Elisa .
Abby rows 10 km upstream and 10 km back in a total time of 3 hr. The speed of the river is 5km/h. Find Abby’s speed in still water.

applications involving quadratic 
bobpursley
she went the same distance.
(v+5)3=(v5)10)
3v+15=10v50
7v=65
v=65/7 km/hr
What does this have to do with quadratics? 
applications involving quadratic 
Elisa
thats what my mathbook said. That why I needed help thank you bobpursley.
Respond to this Question
Similar Questions

RATE, DISTANCE, TIME
TIM PADDLED HIS KAYAK 12 KM UPSTREAM AGAINST A 3 KM/H CURRENT AND BACK AGAIN IN 5 HR 20 MINUTES. iN THAT TIME HOW FAR COULD HE HAVE PADDLED IN STILL WATER 12/(v+3) + 12/(v3) = 5.33 hours Solve for this speed in still water, v. 12(v3) … 
math
Rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hr. The speed of the river is 5km/h. Find Abby’s speed in still water.use fivestep problem solving process 
algebra
rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hours. The speed of the river is 5km/h.Find Abby's speed in still water. 
intermediate algebra
Rowing. Abby rows 10km. upstream and 10km. back in a total time of three hours. The speed of the river is 5km./h. Find Abby's speed in still water. 
7th Grade Math
Toni rows a boat 4.5km/h upstream and then turns around and rows 5.5km/h back to her starting point. If her total rowing time is 48 min , for how long does she row upstream? 
algebra
Abby Tanenbaum paddled her canoe 10 miles upstream, and then paddled back to her starting point. If the rate of the current was 3 mph,and the entire trip took 3.5 hours, what was Abby's rate (in still water)? 
PHYYYYYSICS 5
Two trucks driven by Abby and Brian start at the same position and take off in different directions in an open field. Abby is traveling at a speed of 40 mph in a direction 30° south of west. Brian is traveling at a speed of 56 mph … 
MATH
Abby, Betty, Cassie, and Dale need to cross the river on a boat. The boat only fits at most two people. If two people go over one must bring it back for the others. Abby takes 1 min., Betty 2 min., Cassie takes 5 min., and Dale takes … 
physics
Three people attempt to hold a heavy sign in place. Abby pulls directly upwards (in the middle) with 140 N of force. Joe is ob Abby's left and pulls at a 30.0° to Abby's rope with a force of 180 N. Henry is on Abby's right and pulls … 
Physic
A river 1.00 mile wide flows with a constant speed of 1.00 mi/h. A woman leaves from a point on the river bank. The woman rows a boat 1.00 mi directly upstream and returns to the starting point. Her speed in still water is 2.00 mi/h. …