Question

Asked Dec 21, 2019

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Find the sum. 8+7.2+6.4+5.6+.............+(-45.6)

Step 1

It is required to calculate the sum of:

Step 2

Since the above series is arithmetic and the common difference (d) is -0.8, the first term is 8 and the last term is -45.6.

Calculate the number of terms to find the sum.

The formula to calculate nth term is:

Step 3

Now, put the values to calcu...

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