...b + c) = 1 b + c = 8 b = 8 - c Speed of current—c: c + 6 = 8 - c 2c = 2 c = 1 Speed of boat : = 1 + 6 = 7 Answer: speed of current, 1 mph; speed of boat , 7 mph

3 Answers · Science & Mathematics · 29/09/2009

...b = height of dock, and c = length of rope. a^2 + b^2 = c^2 2a da/dt + 2b db/dt = 2c dc/dt a da/dt + b db/ddt = c dc/dt 5 da/dt + 12(0) = 13 • 4 5 da/dt = 52 da/dt = 10.4 The boat is going 10.4 ft/sec. As it gets closer to...

3 Answers · Science & Mathematics · 02/03/2010

...at rightangles from A to B (the boat ). The line BC is the distance ... => (4-x) = BC*SinC = 4/Sin^ 2C T(C) =2*4/Sinc + 3*4 /Sin...

1 Answers · Science & Mathematics · 30/06/2011

...the second equation: (C + 5) + C = 20 2C = 20 - 5 C = 15/2 C = 7.5 Use...7.5 = 5 B = 12.5 Therefore the boat in still water travels at 12.5 miles per...

3 Answers · Education & Reference · 21/03/2010

...substitute x in 2. into x in 1. 1. x + c = 10m/h (6+c)+c=10 6+ 2c =10 c=(10-6)/2 c=2m/h Therefore, the speed of the current is 2miles/hr b) Now just consider the boat 's speed, without the current's speed: Plug in...

2 Answers · Science & Mathematics · 06/04/2011

...;_ylu=X3oDMTBtbGZ2dXFpBF9zAzk2NjEzNzY3BHNlYwNzZWFyY2g-?stx= boat +manufacturer&csz=boston% 2C +ma

1 Answers · Business & Finance · 04/07/2006

let x be the distance between pulley and boat , let c be the length of the rope so that; 1^2 + x^2 = c^2 ... in respect to time: d/dt(1^2 + x^2) = d/dt(c^2) 2x dx/dt = 2c dc/dt x dx/dt = c dc/dt (8)dx/dt = sqrt(65)(-1.2) dx/dt = -0.15sqrt...

1 Answers · Science & Mathematics · 19/07/2015

... that in and got the result below. http://www.yelp.com/search?find_desc= boat +rental&find_loc=Los+Angeles% 2C +CA

1 Answers · Cars & Transportation · 23/07/2011

4(s + c) = 20 or 4s + 4c = 20 2(s - c) = 2 or 2s - 2c = 2 or s = 2 + c substitute second equation into first equation: 4(2 + c) + 4c = 20 8 + 4c + 4c = 20 8c = 12 c = 12/8 = 1.5 mi/hr The current speed is 1.5 miles per hour. - .--

1 Answers · Education & Reference · 02/12/2013

Variables: r = rate of boat c = speed of current Convert 20 minutes to ... equation. 10 = (r - c) / 2 10 = (30 - c - c) / 2 10 = (30 - 2c ) / 2 Cross-multiply. 10 * 2 = (30 - 2c ) * 1 20 = 30 - 2c ...

3 Answers · Science & Mathematics · 30/01/2009