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1. ### Help with Algebra 2 problem?

...of one another and subtract b+c = 21 b-c = 3 ------------------ 2c = 18 c = 9 miles per hour for the current speed sub...39;b' b-9 = 3 b = 12 miles per hour for the boat some free videos on this concept at http://www.kjaro...

1 Answers · Education & Reference · 10/06/2013

2. ### Distance, rate and time?

...into one of the equations 2r + 2c = 20 2(25/3) + 2c = 20 50/3 + 2c = 20 2c = 10/3 c = 5/3 The rate of the boat is 8 and 1/3 mph and the current is 5/3 mph.

2 Answers · Science & Mathematics · 24/03/2007

3. ### algebra help please 5 stars?

...the speed of the current be c miles per hour. Let the speed of the boat be b miles per hour (c + b)/3 = (c - b)/2 2(c + b) = 3(c - b) 3c - 2c = 2b + 3b c = 5b We should find from among the given answers...

2 Answers · Science & Mathematics · 12/08/2010

...5 =>x=19.5/2=9.75 mph Hence the speed of the boat in still water is 9.75 mph (C) is correct...the solution set Question 4# 8ac+12ad+10bc+15bd =4a( 2c +3d)+5b( 2c +3d) =(4a+5b)( 2c +3d) So A is...

3 Answers · Science & Mathematics · 21/02/2007

5. ### Can anyone help me with this math question please?

...24). 51 = (v-c)*3 v - c = 17 v = 17 + c v = 25 - c = 17 + c 25 - 17 = c + c 2c = 8 c = 4 v = 17 + c = 17 + 4 = 21 So the boat will travel 21 mph in still water, and the current is moving at 4 mph.

1 Answers · Science & Mathematics · 24/11/2008

6. ### Another algebra one problem, can anyone solve?

...r + c) 60 = 5(10 + c + c) 60 = 5(10 + 2c ) 60 = 5(10) + 5( 2c ) 60 = 50 + 10c 60 - 50 = 10c 10 = 10c 10 / 10 = 10c / 10 1...rate of the current is 1 mph. The rate of the boat in still water is 11 mph. CHECK: ...

1 Answers · Science & Mathematics · 09/02/2013

7. ### Calculus Problem: Related Rates?

...bow and dock. b = height of pulley referenced to boat 's bow = 1m Using Pythagorean ...a^2 + 1 Differentiating this with respect to t, 2c dc/dt = 2a da/dt Solving for da/dt, da/dt = ( 2c ...

1 Answers · Science & Mathematics · 23/10/2009

8. ### Help me Form and Solve the system of Equations?

...c - 12 b + c = 20 substitute: (c - 12) + c = 20 2c - 12 = 20 2c = 32 c = 32/2 = 16 km/hr using first equation... second equation: 4 + 16 = 20 20 = 20 The boat 's speed is 4km/hr. The current speed ...

1 Answers · Education & Reference · 30/04/2013

9. ### Question on applications of the derivative?

...these values, so we can plug them in. 2N(35) + 2E(40) = 2c (dc/dt) We also know that after 2 hours, the northwards boat will have traveled 35 × 2 = 70 km, while the eastwards boat will have ...

1 Answers · Science & Mathematics · 30/04/2011

10. ### A FUN PUZZLE TO SOLVE: There are 3 Cannibals and 3 humans on one side of the river and the 3 humans need to?

[Best Answer] 2C cross, 1 remains, one returns 1:1 cross, 1H remains, 1C returns 2H cross, 1C returns with the boat to the first shore

4 Answers · Science & Mathematics · 04/09/2006