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Find the sum of the summation of 2 i minus 12, from i equals 7 to 16. 22 110 220 440
10 months ago
Q:
Find the sum of the summation of 2 i minus 12, from i equals 7 to 16. 22 110 220 440
Accepted Solution
A:
Sum: S
S=[2(7)-12]+[2(8)-12]+[2(9)-12]+[2(10)-12]+[2(11)-12]+[2(12)-12]+[2(13)-12]+[2(14)-12]+[2(15)-12]+[2(16)-12]
S=2(7+8+9+10+11+12+13+14+15+16)-10(12)
S=2(115)-120
S=230-120
S=110
Answer: Second option 110