planetcaitlin planetcaitlin

30-03-2017
Mathematics

contestada

A paddle boat can move at a speed of 2 km/h in still water. The boat is paddled 16 km downstream in a river in the same time it takes to go 8 km upstream. What is the speed of the river?

Respuesta :

dalesydney113 dalesydney113

30-03-2017

going downstream -

t = 14/(2 + v)

going upstream -

t = 7/(2 - v)

14/(2 + v) = 7/(2 - v)

(2 + v)/2 = 2 - v

v = 2/3km/h

Answer Link

Otras preguntas

which of the following animals is most often found in a deciduous ecosystem

What is the value of |-8/9|

A rectangular parking lot has a perimeter of 310 meters. The length is 5 meters more than 4 times the width. What’s is the length and width?

At Joe's candy store, the total cost of 1 gumball and 1 lollipop is $0.74. The total cost of 1 chocolate bar and 1 lollipop is $0.92. The total cost of 1 gumbal

Subtract 8 1\5 - 4 2\5 . Simplify the answer and write as a mixed number.

How do all five sphere interact with thunderstorms

A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of sixsix digits. The first digit cannot be 2

write the equation of the line that is perpendicular to y = 7x - 3 and passes through the origin

14. Which word in this sentence is an adverb? The doctor told us we had to leave almost immediately. A.Us B. Leave C. Doctor D. Almost

The __________ are an important part of the kidney's urine-concentrating mechanism found surrounding the nephron loops (loops of Henle) of juxtamedullary nephro