i need help understanding a certain type of problem, I dont want the answer I want the formula that goes alone with it and possible step by step guidance.
Anyone that can help will get a fan and a medal

Question

i need help understanding a certain type of problem, I dont want the answer I want the formula that goes alone with it and possible step by step guidance.
Anyone that can help will get a fan and a medal

hartnn · Answer

sure,
whats your question ? :)

anonymous · Answer

im having trouble understanding arithmetic mean
the question is to :
FIND THE ARITHMETIC MEAN aN OF THE GIVEN TERMS

An=10,An+1=20

hartnn · Answer

you want arithmetic mean of 10, 20 ?

arithmetic mean of a,b  is 
just the average of a and b 
$\dfrac{a+b}{2}$

anonymous · Answer

so then it would be five?

hartnn · Answer

no,
what is (10+20)/2 
?

and are you sure you posted your question correctly and completely ?

anonymous · Answer

oh crap we have to add, i subtracted lol i dont know why just a brain thing.
okay so then it would be 15

hartnn · Answer

correct :)
15 is the arithmetic mean of 10, 20

anonymous · Answer

thanks alot :)

hartnn · Answer

welcome ^_^

anonymous · Answer

could u help me understand one more problem @hartnn