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manaspercy
06.01.2020 •
Mathematics
The sum of the first 100 positive integers is 5,050. what is the sum of the first 200 positive integers?
a. 10,000b. 10,200c. 15,050d. 20,050e. 20,100
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Ответ:
The sum of the k for k=1 to k="n"=(n*(n+1))/2 , where "n" is the total integer.
In this problem n = 200
Sum = (200*201)/2 = 20,100
Ответ:
Step-by-step explanation:
the perimeter is when you add all around so add 10+6+8
= 24