Solve the problem.Within a group of n people, the number of possible handshakes, N, is given by 
At a party, everybody shakes hands with every other person. If the total number of handshakes is 78, how many people are at the party?
A. 13 people
B. 14 people
C. 15 people
D. 12 people
Answer: A
Mathematics
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Solve the problem.Evaluate 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
A. 
sin
+ C
B. -2 sin
+ C
C. 2 cos
+ C
D. - 
cos
+ C
Mathematics
Translate the sentence to an inequality.A number is less than or equal to -2.
A. x ? -2 B. x ? -2 C. x < -2 D. x > -2
Mathematics
Find the sum of the infinite geometric series, if it exists.4 + 
+ 
+ 
+ . . .
A. 
B. 6
C. 
D. does not exist
Mathematics