Tuesday

January 27, 2015

January 27, 2015

Posted by **Renee** on Sunday, October 26, 2008 at 12:24am.

- Radical and Rational exponents -
**Reiny**, Sunday, October 26, 2008 at 8:50amYou have just asked two different questions in the same paragraph.

I will do the last one,

then you follow my method to do the first one.

your time for lawn is 1 hour

sister's time to do the same lawn is 2 hours

your combined rate would be lawn/1 + lawn/2 = 3/2 lawn/hour

so time working together = lawn/[lawn/(3/2)]

= 2/3 hours , (lawn will cancel)

**Answer this Question**

**Related Questions**

MATH - An application of a rational function is T = (AB)/(A+B), which gives the...

College Algebra - Part 1: Using the Library, web resources, and/or other ...

Math - Use rational exponents to simplify the radical. If rational exponents ...

Math - Use rational exponents to simplify the radical. If rational exponents ...

math - Why is it important to simplify radical expressions before adding or ...

rational exponents - Express cube root 27x^4y^6 using rational exponents (27x^4y...

math - one task takes 7 mins second task takes 12 min third task takes 21 nin ...

Algebra - The formula T=2π√L/480 can be used to find the period (T in...

Algebra - If it takes Mary 45 minutes to basic cleaning of her house, and it ...

Algebra - If it takes Mary 45 minutes to basic cleaning of her house, and it ...