Find the perimeter.
A. 50 cm
B. 43 cm
C. 61 cm
D. 54 cm
Answer: D
Mathematics
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Use the information below to determine the cardinality of the set. U = {x | x ? N and x ? 15} A = {x | x ? N and 5 < x < 10} B = {x | x ? N and x is even and x < 14} C = {x | x ? N and 8 ? x ? 13}n(A ? B ? C)
A. 2 B. 0 C. 1 D. 10
Mathematics
Let A = {1, 3, 5, 7}; B = {5, 6, 7, 8}; C = {5, 8}; 
and 
Determine whether the given statement is true or false.A ? A
A. True B. False
Mathematics
Determine whether the relation is a function. Give the domain and range.{(3, -1), (1, 4), (12, 7), (6, 10), (9, -8)}
A. not a function; domain: {1, 6, 12}; range: {-1, -8, 4, 7, 10} B. function; domain: {1, 3, 6, 9, 12}; range: {-1, -8, 4, 7, 10}
Mathematics
Add the numbers using the number line.-5 + 2 
A. -3 B. 3 C. -7 D. 7
Mathematics