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0
136
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avatar+3784 

Help #1

NotSoSmart  Mar 12, 2018

Best Answer 

 #1
avatar+13695 
+1

1)   You can just add all of the numbers to get the total....use a calculator

 

     or use      sum =  n ( a1+an) / 2   =   7 (26+44)/2  =  ??         (n= number of terms  a1=first term  an = nth term)

 

2.)   add them all up with calculator....or use

   

        Sum = n (a1+an)/2   =  8 (7.6 + (-1.5) )/2 = ??       

ElectricPavlov  Mar 12, 2018
 #1
avatar+13695 
+1
Best Answer

1)   You can just add all of the numbers to get the total....use a calculator

 

     or use      sum =  n ( a1+an) / 2   =   7 (26+44)/2  =  ??         (n= number of terms  a1=first term  an = nth term)

 

2.)   add them all up with calculator....or use

   

        Sum = n (a1+an)/2   =  8 (7.6 + (-1.5) )/2 = ??       

ElectricPavlov  Mar 12, 2018

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