Solve the problem.Using the numerals 0 through 9, how many 7-digit serial numbers can be made if the first digit must be 0 or 1 and numerals may be repeated?
A. 2,000,000
B. 120
C. 1,062,882
D. 10,000,000
Answer: A
Mathematics
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Solve the system by substitution.x + y = -2x - y = -8
A. {(5, 4)} B. {(-5, 3)} C. ? D. {(-6, 4)}
Mathematics
Simplify. (Assume all variables are nonzero.)
2
A. 
B. 
C. 
D. 
Mathematics
Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given.a = 92; d = -6an = ?; a6 = ?
A. an = 92 - 6n; a6 = 62 B. an = 98 - 6n; a6 = 8 C. an = 92 - 6n; a6 = 8 D. an = 98 - 6n; a6 = 62
Mathematics
Find the median and the mode for the following data set. ? 130 140 113 180 220 250 200 104 140 150 ?
A. ?Median: 235, Mode: 140 B. ?Median: 150, Mode: 140 C. ?Median: 145, Mode: 140 D. ?Median: 143.3, Mode: 140 E. ?Median: 235, Mode: 150
Mathematics