please help with this!! 3) The rate of the current in the Susanna River is 4 km/h. If a canoeist can paddle 5 km downstream inthe same amount of time that she can paddle 1 km upstream, how fast can she paddle in still water?4) An airplane flies 3000 mi in 4 h and takes 5h to make the return trip. What is the plane's speed instill air and what is the speed of the wind?

Name: please help with this!! 3) The rate of the current in the Susanna Rive
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Description: please help with this!! 3) The rate of the current in the Susanna River is 4 km/h. If a canoeist can paddle 5 km downstream inthe same amount of time that she can paddle 1 km upstream, how fast can she paddle in still water?4) An airplane flies 3000

Answered: p with this!!

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter11: Rational And Irrational Numbers

Section11.5: Square Roots Of Variable Expressions

Problem 9P

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please help with this!!

3) The rate of the current in the Susanna River is 4 km/h. If a canoeist can paddle 5 km downstream in
the same amount of time that she can paddle 1 km upstream, how fast can she paddle in still water?
4) An airplane flies 3000 mi in 4 h and takes 5h to make the return trip. What is the plane's speed in
still air and what is the speed of the wind?

Expert Solution

Step 1

As per the bartleby guidelines for more than one question only one has to be solved. Please upload the other question separately.

Let the speed of boat in still water is $x \frac{k m}{h .}$

The rate of the current is $4 \frac{k m}{h .}$

The current speed against wind is $x - 4 \frac{k m}{h .}$

The current speed with wind is $x + 4 \frac{k m}{h .}$

Similarly the distance against current flow which is upstream is 1 km.

The distance with current flow which is downstream is 5 km.

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