Melody

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Nombre de usuarioMelody
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Melody  11 feb 2022
 #48
avatar+118735 
+5

@@ End of Day Wrap   Mon 25/5/15   Sydney, Australia Time   1:50am  (Really Tues morn) ♪ ♫

 

Hi all,

 

Our stupendous answers today were presented by Zegroes, TitaniumRome, CPhill, Zegroes, MathsGod1, Thejamesmachine, Andrew1714, Didig, Mathcad, Zacismyname, Alan, Derrickid, Rosala, Awsomeee and Civonamzuk.  Thank you all   

 

If you would like to comment on other site issues please do so on the Lantern Thread.  Thank you.    

 

Interest Posts:

 

1)  Music news report presented by Dgb4thebest                    Thank you.  

2)  Channel 21 News Report presented by Heather Feather.      Thank you

3)  Neat little questions from Mellie                                        Melody

4)  Physics, weight down an inclined plane (continues)             Thanks Alan

5)  Write 4^i in polar form                                                    Thanks Mathcad

6)  Averages and understanding a table                                 Thanks zacismyname

7)  Understanding logs                                                         Thanks Alan

8)  Simultaneous equations and graphing with GeoGebra        Thanks Zac

9)  How much will I have to pay back each month?                 Melody

10)  Differential Equation                                                       Not answered

11) Write a fraction as a percent      FTJ                                  Thanks Radix and Derrickid

 

                          ♫♪  ♪ ♫                                ♬ ♬ MELODY ♬ ♬                                 ♫♪  ♪ ♫

26 may 2015
 #39
avatar+118735 
0

Tues 26/5/15

If you would like to comment on other site issues please do so on the Lantern Thread.  Thank you.    

Interest Posts:

FTJ means 'For the juniors' 

1)  Sigma notation for permutation question

2)  A neat little equation                                           Thanks Alan      

3) Average speed     (middle high level)                     Thanks CPhill    

4) Factorizing quadratics with leading coeff >1            Thanks Zacismyname  

5) GeoGebra tools                                                    Thanks Zacismyname and Alan

 

                          ♫♪  ♪ ♫                                ♬ ♬ MELODY ♬ ♬                                 ♫♪  ♪ ♫

26 may 2015
 #3
avatar+118735 
0
26 may 2015
 #1
avatar+118735 
+10

 

$$\\81=6^x+2x-8x\\
81=6^x-6x\\$$

 

https://www.desmos.com/calculator/xcnbodzoi0

 

From my graph the approximate answers are x=-13.5  and x=2.55

26 may 2015