Use the union rule to answer the question.If n(B) = 24, n(A ? B) = 5, and n(A ? B) = 42; what is n(A)?
A. 21
B. 25
C. 23
D. 18
Answer: C
Mathematics
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Use implicit differentiation to find dy/dx and d2y/dx2.xy + 3 = y, at the point (4, -1)
A. 
= 
; 
= 
B. 
= - 
; 
= 0
C. 
= 3; 
= - 24
D. 
= 
; 
= - 
Mathematics
Find the component form of the specified vector.The vector from the point A(9, 9) to the origin
A. (9, 9) B. (-9, 9) C. (9, -9) D. (-9, -9)
Mathematics
Find the indicated term for the geometric sequence.
, 
, 
, ...; the 7th term
A. 
B. 
C. 
D. 
Mathematics
Which method should be used to solve the system? Explain your answer, including a description of the first step.x2 + y2 = 81-5x - y = 1
What will be an ideal response?
Mathematics