Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has at least 2 siblings?
A. 0.21
B. 0.6
C. 0.79
D. 0.4
Answer: D
Mathematics
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Fill in the blank with the correct inequality symbol.If x < 6, then x - 6 
0.
A. ? B. > C. < D. ?
Mathematics
Use the associative law of addition to write an equivalent expression.r + (2 + s)
A. (2 + s) + r B. r + (s + 2) C. r(2 + s) D. (r + 2) + s
Mathematics
Rationalize the numerator. Assume that all radicands represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Find the perimeter or circumference. Use ? ? 3.14 when needed.A circle whose diameter is 4.7 mi long (Round to three decimal places.)
A. 17.341 mi B. 7.379 mi C. 14.758 mi D. 29.516 mi
Mathematics