Solve the problem.If two cards are drawn without replacement from an ordinary deck, find the probability that the second card is a spade, given that the first card was a spade.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Provide an appropriate answer.Use the following frequency distribution to determine the class limits of the next class if an additional class were to be added.
A. 62-69 B. 63-70 C. 62-77 D. 54-61
Mathematics
Find the derivative of the function at the given point in the direction of A.
A = 4i - 3j
A. 
B. 
C. 
D. 3
Mathematics
Solve the compound inequality.9x + 7 ? 3 or 4x - 4 > 6
A. x ? - 
or x > 
B. - 
? x < 
C. x ? - 
or x > 
D. No solution
Mathematics
Solve the problem.If the marginal price 
at x units of demand per week is proportional to the price p, and if at $80 there is no weekly demand 
and if at $50.18 there is a weekly demand of 8 units 
find the price-demand equation.
A. 
B. 
C. 
D. 
Mathematics