Add or subtract as indicated. Write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Let A and B be sets with cardinal numbers, n(A) = a and n(B) = b, respectively. Decide whether the statement is true or false.n(A ? B) = n(A) - n(B)
A. True B. False
Mathematics
Divide, if possible. Write the answer in simplest form.44 ÷ 
A. 
B. 13
C. 12
D. 11
Mathematics
Plot the ordered pair. State in which quadrant or on which axis the point lies.(0, -3)
A. y-axis
B. x-axis
C. y-axis
D. quadrant I
Mathematics
Write the function in terms of a function of the reference angle.cos 
A. cos 
B. -cos 
C. cos 
D. -cos 
Mathematics