+0  
 
0
191
3
avatar

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

Guest Mar 11, 2015

Best Answer 

 #3
avatar+91411 
+5

just a little info here.

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

Melody  Mar 11, 2015
Sort: 

3+0 Answers

 #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+26396 
+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+91411 
+5
Best Answer

just a little info here.

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

Melody  Mar 11, 2015

23 Online Users

avatar
avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details