We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
-1
66
4
avatar

HELP .   

For each of the given statements:

• Determine the values of x for which each statement is true.

• Show the set of all points corresponding to the values of x on a number line.

 

x=|x|

 

 

 

HELP#2 .   

 

 

Janet can do a job in 3 hours while Garry can do the same job in 2 hours. If Janet works for an hour before Garry began helping her, how long will it take them to do the job?

 Aug 15, 2019
 #1
avatar+5766 
+2

\(x=|x| \Rightarrow x \in [0, \infty)\)

 

\(\text{Janet's rate is $\dfrac{1}{3}~ job/hr$}\\ \text{Garry's is $\dfrac{1}{2}~job/hr$}\\ \text{Janet works an hour and gets $\dfrac 1 3$ of the job done}\\ \text{Garry joins her and they work at the rate of $\dfrac 1 3 + \dfrac 1 2 = \dfrac 5 6~job/hr$ on the remaining $\dfrac 2 3$ of the job}\\ \text{It takes them $\dfrac{\frac 2 3}{\frac 5 6} = \dfrac 4 5~hr$ to complete the job}\)

.
 Aug 15, 2019
 #2
avatar
-3

Both are rong -_-

 Aug 15, 2019
 #3
avatar
-3

Here is the answer to part 1

\(\frac{9}{5}\)

 

here is the expnation by CPhil

 

https://web2.0calc.com/questions/help_77520

Copy and past into search.

 Aug 15, 2019
 #4
avatar+5766 
+2

CPhil included the 1 hr Janet spent working alone.  I did not.

 

The question asks how long it would take "them" to do the job.

 

If you're going to be so critical perhaps investigate a bit further in the future.

Rom  Aug 15, 2019

19 Online Users

avatar