Find the 11th partial sum of the summation of negative 7i plus 22, from i equals 1 to infinity.
1 answer:
The answer is -220 What you do is take -7 and multiply that by (1+2+3+4+5+6+7+8+9+10+11) and then after that add 11 again and multiply it by 22. It would look like this. -7 x (1+2+3+4+5+6+7+8+9+10+11) +11 x 22 Simplify that to -7 x 66 +11 x 22 now multiply -7 and 66 to get -462 -462 +11 x 22 multiply 11 and 22 -462 + 242 and your final answer will be -220
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