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.If B ? A, n(B) = n(A) - n(A - B).
A. True
B. False
Answer: A
Mathematics
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Solve the problem.The magnitude of star A is 3 more than that of star B. How is their corresponding brightness related?
A. Star B is ? 158.5 times brighter than star A. B. Star B is ? 15.8 times brighter than star A. C. Star B is ? 25.8 times brighter than star A. D. Star B is ? 5.8 times brighter than star A.
Mathematics
For 
find the simplified difference quotient.
What will be an ideal response?
Mathematics
Evaluate the expression. Write your answer without negative exponents.(-3)-4
A. -81
B. 81
C. - 
D. 
Mathematics
Determine the coefficient and degree of the monomial.-15xy
A. coefficient: 2, degree: -15 B. coefficient: 15, degree: 1 C. coefficient: -15, degree: 2 D. coefficient: -15, degree: 1
Mathematics