Identify the given number as "Rational", "Irrational", or "Not a real number". If the number is rational, give its exact value. If the number is irrational, give a decimal approximation to the nearest thousandth.- 
A. Not a real number
B. Rational, -10.630
C. Irrational, -10.630
D. Irrational, 10.630
Answer: C
Mathematics
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B. 
C. 
D. 
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Determine the probability using a probability tree.A bag contains 3 red and 6 yellow marbles. Two marbles are drawn without replacement. Determine the probability of picking two red marbles.
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B. 
C. 
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Solve the equation.
= 13
A. 16 B. 17 C. 52 D. 3
Mathematics
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.2.8x + 1.3y - 4.1z = 2.54.1x - 6.7y + 1.9z = -4.74.6x + 4.8y + 5.6z = 8.1
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Mathematics