Solve the problem.If two cards are drawn without replacement from an ordinary deck, find the probability that the second card is red, given that the first card was a heart.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use factoring techniques to solve the quadratic equation.x2 + 8x + 7 = 0
A. {1, - 7} B. {1, 7} C. {7, 0} D. {- 1, - 7}
Mathematics
Identify the dependent and independent variables.Operating costs, profit
A. Dependent: Profit Independent: Operating costs B. Dependent: Operating costs Independent: Profit
Mathematics
Solve the problem.A plane flies 400 miles with the wind and 320 miles against the wind in the same length of time. If the speed of the wind is 22 mph, what is the speed of the plane in calm air?
A. 203 mph B. 188 mph C. 198 mph D. 223 mph
Mathematics
Determine whether the graph shown is the graph of a polynomial function.
A. polynomial function B. not a polynomial function
Mathematics