find the sum of (-391)+(-81)+9+(-18)
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Answered by
3
Answer:
The sum of first 20 terms of the sequence 0.7, 0.77, 0.777, .. , is (1) `7/9(99-10^(-20))` (2) `7/(81)(179+10^(-20))` (3) `7/9(99+10^(-20))` (3) `7/(81)(179-10^(-20))`
Answered by
3
Answer:
-481
Step-by-step explanation:
-391 -81 -18 +9
=-391-99+9
=-490+9
=-481
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