Find the requested probability.A box contains the following mixture of colored marbles: 2 black, 3 red, 5 yellow, and 2 green. If two marbles are drawn, the second being drawn after the first is replaced, then what is the probability that both are black?
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Write the phrase as a variable expression. Use x to represent "a number."The quotient of 39 times a number and -6
A. 
B. 39x + 6
C. 
D. 39x - 6
Mathematics
Compute r, the linear coefficient of correlation, for the given data.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters):
A. 0.256 B. 0.196 C. 0 D. -0.210
Mathematics
Provide an appropriate response.Find the median of 5, 30, 24, 27, 12, 21, 10, 12, 18.
A. 18 B. 25 C. 12 D. none of the above
Mathematics
Determine the place value of the digit 3 in the whole number.65,818,553
A. hundreds B. ten millions C. ones D. tens
Mathematics