Solve the problem.In a round robin tennis tournament, every player plays against every other player. If 11 players are entered in a round robin tennis tournament, how many matches will be played?
A. 112
B. 11 × 2
C. 11 × 10
D. 211
E. 
Answer: E
Mathematics
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Solve the problem.Barry originally had 12
yards of canvas awning fabric. After making awnings for the Jackson family, he had 5
yards remaining. How many yards of fabric did he use on the Jackson's awnings?
A. 5
yd
B. 8
yd
C. 7
yd
D. 6
yd
Mathematics
Find the mode or modes for the set of numbers.$90, $57, $32, $57, $29, $90
A. $57 B. No mode C. $90, $57 D. $90
Mathematics
Matrix A is given. Find appropriate identity matrices Im and In such that ImA = A and AIn = A.A = 
A. Im = 
, In = 
B. Im = 
, In = 
C. Im = 
, In = 
D. Im =
, In = 
Mathematics
Calculate 
.A = 
A. -22 B. -54 C. 54 D. 10
Mathematics