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Daniel [21]
2 years ago
12

Help please I’m begging you

Mathematics
2 answers:
zzz [600]2 years ago
8 0

Answer:

B

Step-by-step explanation:

add to eliminate y

irga5000 [103]2 years ago
6 0

Answer:

subtract to eliminate y

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Find the sum of the first one hundred positive integers. see fig 6.26
nignag [31]
Here's a pattern to consider:
1+100=101
2+99=101
3+98=101
4+97=101
5+96=101
.....
This question relates to the discovery of Gauss, a mathematician. He found out that if you split 100 from 1-50 and 51-100, you could add them from each end to get a sum of 101. As there are 50 sets of addition, then the total is 50×101=5050
So, the sum of the first 100 positive integers is 5050.

Quick note
We can use a formula to find out the sum of an arithmetic series:
s =  \frac{n(n + 1)}{2}
Where s is the sum of the series and n is the number of terms in the series. It works for the above problem.
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A number is multiplied by 16, and that product is added to 8. The sum is equal to the product of 4 and 10. Find the number.
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