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i got the same question for homework in functions.
tn=a+(n-1)d
-50=-1+(n-1)-1
-50=-1-1n+1
-50=-1n
therefore n=50
plug that into your sum equation...for convenience i used
Sn=50/2 (-1-50)
Sn=25 (-51)
Sn= -1275
hope this helps!
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∙ 14y ago
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What is the sum of the first 50 positive even integers?
They total 650. * * * * * It is 2550.
What is the sum of the first 50 natural numbers?
sum of n natural number is n(n+1)/2 first 50 number sum is 50(50+1)/2 = 1275
What is the sum of the numbers from 1 to 50?
Sum of first n integers = n/2(n+1), in this case 25 x 51 = 1275
What is the sum of the first 25 even numbers?
The sum of the first n positive integers (i.e. 1+2+3+...+n) is given by n(n+1)/2 so the sum of the first 25 positive integers is 1+2+3+...+25 = 25x26/2 = 325. The sum of the first 25 EVEN numbers will be double this i.e. 2+4+6+...+50 = 650.
The sum of three consecutive integers is 150?
49+50+51=150 General rule for this kind of question: divide the number you're trying to obtain (150) by the number of integers you're allowed (3), and then simply add one and subtract one until you have the specified number of integers.
What is the greatest of 5 consecutive integers if the sum of these integers equals -45?
50
What is the sum of the integers from -30 to 50 inclusive?
810. All of the integers from -30 to30 cancel each other out by adding a negative to a positive. Then all you need to do is add the integers from 31 to 50. (31 + 32 + ....+50)
What is the sum of the integers of -50 and 35?
-15
What are the integers if the sum of two integers is 15 and the product of two integers is 50?
5 & 10
What are two consecutive integers whose sum is 99?
The integers are 49 and 50.
What is the sum of the first 50 positive integers?
1275
What are the two consecutive odd integers whos sum is 50?
no solultion!
3 consecutive integers have the sum of 153?
50, 51, 52
The sum of two consecutive positive integers is less than 50?
It can be.
The sum of all the integers between 50 to 350 which end in 1 is?
If you write down all of the integers between the two numbers, your sum is equivalent to 5,659.
What is the sum of the first 50 positive even integers?
They total 650. * * * * * It is 2550.
What are the three consecutive integers of the sum 153?
50 + 51 + 52 = 153
