Solve the problem.In a sports league of n teams in which each team plays every other team twice, the total number N of games to be played is given by N = n2 - n. What is the total number of games to be played in a football league having 19 teams?
A. 38
B. 380
C. 342
D. 361
Answer: C
Mathematics
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Tell whether the statement is true or false.The absolute value of any nonzero number is positive.
A. True B. False
Mathematics
Solve the equation for exact solutions.cos-1 x = sin-1 
A. {0}
B. ?
C. 
D. 
Mathematics
Given that a quantity Q(t) exhibiting exponential decay is described by the function
where t is measured in years. What is the decay constant? What quantity is present initially?Complete the table of values. Round your answer to the nearest integer.
t
0
5
10
20
100
Q
____
____
____
____
____
A. k = 2,200; Q = -2,200??
| t | 0 | 5 | 10 | 20 | 100 |
| Q | 2,200 | 1,912 | 1,530 | 1,000 | 35 |
B. k = 2,200; Q = -2,200?
| t | 0 | 5 | 10 | 20 | 100 |
| Q | 2,200 | 1,912 | 1,475 | 1,000 | 40 |
C. k = -0.04; Q = 2,200?
| t | 0 | 5 | 10 | 20 | 100 |
| Q | 2,200 | 1,801 | 1,530 | 989 | 35 |
D. k= -0.04; Q = 2,200?
| t | 0 | 5 | 10 | 20 | 100 |
| Q | 2,200 | 1,801 | 1,475 | 989 | 40 |
Mathematics
Convert the units using unit fractions.448 oz = 
lb
A. 44 B. 29 C. 112 D. 28
Mathematics