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  
 
0
264
9
avatar+81 

Thanks in advance!!!

1. 

I got a=20 and b=20, so 400, why isn’t it the largest already?

 

2.

Came up with:

If x is a number bigger than 15 and 20, then x can be the median or 25.
If x is bigger than 25, then 25 is the median
If x is the biggest number, then 25 is the median.
If x is the smallest number, then 20 is the median.

Then I don’t know...

 

 

3.

 Sep 28, 2018
edited by HelpPls  Sep 28, 2018
 #1
avatar
0

1) 

I think a = 15  and   b=30..............and so: a x b = 15 x 30 = 450.

 Sep 28, 2018
 #3
avatar+81 
0

Um...15+2(30)=75, not 60...

HelpPls  Sep 28, 2018
 #2
avatar
+1

mean {15, 20, 22, 25, 30} = 22.4

median {15, 20, 22, 25, 30}=22

 

Also, x=37 seems to work

mean {15, 20, 25, 30, 37}=25.4

median {15, 20, 25, 30, 37}=25

Note: there may others!!!!

 Sep 28, 2018
edited by Guest  Sep 28, 2018
edited by Guest  Sep 28, 2018
 #5
avatar+81 
0

Yep, there are others. I listed all of them out and got 12 too.

HelpPls  Sep 28, 2018
 #4
avatar
+1

a=30 and b=15 =30 + (2*15) =60. So, ab =30*15 =450 !!!!!.

 Sep 28, 2018
 #6
avatar+81 
+1

Oh right. Thanks.

HelpPls  Sep 28, 2018
 #7
avatar+81 
0

For 3, I got 12/29. Please point out any mistakes I might have made. Thanks,

 

 Sep 28, 2018
 #8
avatar+2343 
+1

I think you made a mistake, HelpPls, but I am glad that you are attempting this. 

 

I noticed this error in your work:
 

\(\left(4\triangle\frac{3}{8}\right)=\frac{\sqrt{4*\frac{3}{8}}}{\left|4-\frac{3}{8}\right|}\Rightarrow\frac{\frac{3}{2}}{\frac{32}{8}-\frac{3}{8}}\)

 

The square root operator suddenly disappeared. Otherwise, though, I think you did well with evaluating this. 

TheXSquaredFactor  Sep 28, 2018
 #9
avatar+81 
+1

Ok thanks for telling me.

HelpPls  Sep 29, 2018

5 Online Users

avatar