Find the probability.When a single card is drawn from an ordinary 52-card deck, find the probability of getting a black 10 or a red 7.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Find the mass of the region of density 
bounded by the hemisphere 
and the xy-plane.
A. 16? B. 32? C. 8? D. 4?
Mathematics
Solve the problem.Find the image of the given figure under the reflection that sends P to P'.
A. 
B. 
C. 
D. 
Mathematics
Solve the quadratic equation by completing the square.x2 + 3x - 9 = 0
A. {-3 - 3
, -3 + 3
}
B. 
C. 
D. 
Mathematics
Use partial fractions to find the sum of the series.
A. 
B. 
C. 1
D. 3
Mathematics