Thursday

July 24, 2014

July 24, 2014

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

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^2-6x-8=0

(x-4)(x+2)

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

x+2=4+2=6

Sammy =6 hours

6x2=12

Joe = 12 hours

Thanks

**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 ...

Garland High school - Suppose you must maintain a balance of least $500 in your ...