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note 4 More Optimizing Shapesmar10.notebook 1 October 14, 2016 Example 1 Least DistanceTime A boat leaves a dock at noon and heads west at a speed of 25 km/hr. Another boat heads north at 20 km/hr and reaches the same dock at 1:00 pm. At what time are the boats closest to each other? (Ans= 12:23 pm) More Optimizing Least Distance and or Time

More Optimizing Least Distance and or Time · 2018. 9. 1. · note 4 More Optimizing Shapesmar10.notebook 1 October 14, 2016 Example 1 Least DistanceTime A boat leaves a dock at noon

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Page 1: More Optimizing Least Distance and or Time · 2018. 9. 1. · note 4 More Optimizing Shapesmar10.notebook 1 October 14, 2016 Example 1 Least DistanceTime A boat leaves a dock at noon

note 4 ­ More Optimizing Shapesmar10.notebook

1

October 14, 2016

Example 1 ­ Least Distance­Time 

A boat leaves a dock at noon and heads west at a speed of 25 km/hr.  Another boat heads north at 20 km/hr and reaches the same dock at 1:00 pm.  At what time are the boats closest to each other? (Ans= 12:23 pm)

More Optimizing Least Distance and or Time

Page 2: More Optimizing Least Distance and or Time · 2018. 9. 1. · note 4 More Optimizing Shapesmar10.notebook 1 October 14, 2016 Example 1 Least DistanceTime A boat leaves a dock at noon

note 4 ­ More Optimizing Shapesmar10.notebook

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October 14, 2016Example 2 ­ Least Distance­Cost   A cable television company is laying cable in an area with underground utilities.  Two subdivsions are located on opposite sides of a 200 m  wide river.  The company has to connect points P and Q with cable, where P is on the south bank and Q is on the north bank 2000 m east of P.  It costs $8 /m to lay cable underground and $10 /m to lay cable underwater.  What is the least expensive way to lay the cable and what is the minimum cost?

P.146#12, 14, 15, 16

Worksheet#2, 3, 5

Page 3: More Optimizing Least Distance and or Time · 2018. 9. 1. · note 4 More Optimizing Shapesmar10.notebook 1 October 14, 2016 Example 1 Least DistanceTime A boat leaves a dock at noon

note 4 ­ More Optimizing Shapesmar10.notebook

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October 14, 2016