December 22, 2014

Homework Help: checking to see if this is right

Posted by Paige on Wednesday, March 2, 2011 at 6:26pm.

just checking to see if i have this problem correct

Sammy can cut wood twice as fast as Joe. When they both work together, it takes them 4 hrs. how long would it take them to do the job alone?

4/x +4/x+2 = x^2+2

4x+4x+8= x^2+2
8x+8= x^2+2


x=4 x=-2 since i can't use a -2 i have to put in a 4


Sammy =6 hours
Joe = 12 hours


Answer this Question

First Name:
School Subject:

Related Questions

Algebra 2 word problem - just checking to see if i have this problem correct ...
college algebra - Just che king to see if I did this right. f(x)=(x-4)^2+6 Graph...
Algebra 2 - Just checking to see if I got this right. Thanks, (3x^4--8x^2 -3x-3...
statistics - My problem is to graph a system of inequalities (which ive done) ...
Physics - 1. if a 0.05kg coin is hanging from 22m above the ground: a. If you ...
Algebra - Joe and Theresa want to paint their living room. From past experience...
chemistry - balance this equation. prove that it obeys the law of conservation ...
Math - a) Is ∫[-1 to 1]e^x^3 dx positive, negative, or zero? Explain. I think ...
Chemistry - 1. What molarity is needed so that 5mL diluted to 475 mL will yield ...
English - Mother wants to see you. Father wants to see you. Sister wants to see ...