!ARITHMETIC SEQUENCE!
Find the sum of -50,+(-44),+(-38)...+2038+2044
solution please <3
Find the sum of -50,+(-44),+(-38)...+2038+2044
solution please <3
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Answer:
S = 348,950
EXPLAINATION:
Find n;
An= a1 + (n-1) d
2044= -50 + (n-1) 6
2044= -50 + 6n-6
2044= -56+ 6n
2044+56= 6n
2100 = 6n
6 = 6
n= 350
Finding the sum;
Sn= n/2 (a1 + an)
Sn= 350/2 (-50 + 2044)
Sn= 175 (1994)
S350= 348, 950