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Mathematics 17 Online
OpenStudy (anonymous):

Can somebody PLEAAAAASSEE help me with this problem???

OpenStudy (anonymous):

\[\sum_{m=1}^{5}(4m ^{2}+4)\]

OpenStudy (larseighner):

What do you get for the first term?

OpenStudy (anonymous):

I don't remember how to do this >_<

OpenStudy (larseighner):

What is the value of m in the first term?

OpenStudy (anonymous):

1

OpenStudy (larseighner):

Okay plug that into the formula and what do you get?

OpenStudy (anonymous):

4(1)^2+4 4+4=8

OpenStudy (larseighner):

Okay that is the first term. Since this is a capital sigma question, what will you do with that when you get the next term?

OpenStudy (anonymous):

8+20+40+68+104+148=

OpenStudy (anonymous):

388

OpenStudy (anonymous):

Is that the answer?

OpenStudy (larseighner):

One too many terms. From one to five is five items.

OpenStudy (anonymous):

but isn't that the sum equation?

OpenStudy (anonymous):

[4(1)^2+4]+[4(2)^2+4]+[4(3)^2+4]+[4(4)^2+4]+[4(5)^2+4]+[4(6)^2+4]= 8+20+40+68+104+148= 388

OpenStudy (larseighner):

Thr xum says from m=1 to m=5. That is 1, 2, 3, 4, 5 terms.

OpenStudy (anonymous):

Oh ok. I see what you are saying

OpenStudy (anonymous):

What about this equation? \[5(18^{6x})=26\]

OpenStudy (anonymous):

Solve the equation. Round the answer to the nearest ten-thousandth.

OpenStudy (anonymous):

@LarsEighner

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