Find the probability.If you are dealt two cards successively (with replacement of the first) from a standard 52-card deck, find the probability of getting a heart on the first card and a diamond on the second.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Express the number in scientific notation.0.0000004
A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9
Mathematics
Provide an appropriate response.Solve the system of equations using the addition method: 4x - y = 9 -x + y = -3
A. x = -1, y = 2 B. x = 2, y = -1 C. x = -1, y = -5 D. x = 5, y = 2
Mathematics
Find the perimeter of the polygon.
A. 202 m B. 154 m C. 101 m D. 2544 m
Mathematics
Find the vertex, focus, and directrix of the parabola.x2 = 8y
A. vertex: (0, 0)
focus: (-2, 0)
directrix: x = 2
B. vertex: (0, 0)
focus: (2, 0)
directrix: x = -2
C. vertex: (0, 0)
focus: (0, 2)
directrix: y = -2
D. vertex: (0, 0)
focus: (0, -2)
directrix: y = 2
Mathematics