Use the theoretical probability formula to solve the problem. Express the probability as a simplified fraction.A single die is rolled twice. Find the probability of getting two numbers whose sum is greater than 9.
A. 
B. 
C. 
D. 6
Answer: A
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Solve the system. If the system's equations are dependent or if there is no solution, state this. x + y + z = 7 x - y + 2z = 72x + 3z = 15
A. (1, 2, 4) B. The equations are dependent. C. No solution D. (4, 2, 1)
Solve.The time T necessary to make an enlargement of a photo negative is directly proportional to the area A of the enlargement. If 24 seconds are required to make a 3-by-4 enlargement, find the time required for a 4-by-9 enlargement.
A. 144 sec B. 36 sec C. 72 sec D. 108 sec
Solve and graph.7x - 10 < -31 and -9 - 4x > -13
A. (-?, 1)
B. (-?, -3)
C. (-?, -3) ? (1, ?)
D. (-3, 1)
Find a polynomial equation with real coefficients that has the given roots.3i, 
A. x4 + 4x2 + 63 = 0 B. x4 - 2x2 - 63 = 0 C. x4 + 2x2 - 63 = 0 D. x4 - 4x2 + 63 = 0