+0  
 
0
304
3
avatar

6x^1,7+4=14
WHAT IS THE ANSWER

Guest Mar 11, 2015

Best Answer 

 #3
avatar+92805 
+5

just a little info here.

In many countries a comma is used instead of a decimal point.  

Melody  Mar 11, 2015
 #1
avatar
+5

Hard to answer this without knowing what you mean. Instead of a comma, should there be another sign of operation?

Guest Mar 11, 2015
 #2
avatar+26753 
+5

Assuming this is 

 

$$6x^{1.7}+4=14$$

 

subtract 4 from both sides

$$6x^{1.7}=10$$

 

divide by 6

$$x^{1.7}=\frac{10}{6}$$

 

Take logs of both sides and use the fact that log(ab) = b*log(a) and log(a/b) = log(a) - log(b)

$$1.7\log{x}=\log{10}-\log{6}$$

 

divide by 1.7

$$\log{x}=\frac{\log{10}-\log{6}}{1.7}$$

 

Use the fact that log10a = b means a = 10b

$$x=10^{\frac{\log{10}-\log{6}}{1.7}}$$

 

and since log1010 = 1

$$x=10^{\frac{1-\log{6}}{1.7}}$$

 

You can complete the calculation.

.

Alan  Mar 11, 2015
 #3
avatar+92805 
+5
Best Answer

just a little info here.

In many countries a comma is used instead of a decimal point.  

Melody  Mar 11, 2015

5 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.