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what is the sum of 6(9.36-8.974)² + 3(7.65-8.974)² + 3(9.1-8.974)²

 May 8, 2014

Best Answer 

 #2
avatar+118724 
+5

Or, you could just put it straight into the web2 calc using the "math (input=Result)" tab.

 

$${\mathtt{6}}{\mathtt{\,\times\,}}{\left({\mathtt{9.36}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{7.65}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{9.1}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}} = {\mathtt{6.200\: \!532}}$$

 May 8, 2014
 #1
avatar
+5

*Always use order of operations                            Subtract the numbers in the parenthesis.

6(0.386)^2+3(-1.324)^2+3(0.126)^2                   Then square the contents of the parenthesis

6(.149)+3(1.753)+3(.016)                                    Multiply

.894+5.259+0.048                                               Add

6.201 is your answer

 May 8, 2014
 #2
avatar+118724 
+5
Best Answer

Or, you could just put it straight into the web2 calc using the "math (input=Result)" tab.

 

$${\mathtt{6}}{\mathtt{\,\times\,}}{\left({\mathtt{9.36}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{7.65}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{9.1}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}} = {\mathtt{6.200\: \!532}}$$

Melody May 8, 2014

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