Solve the system of equations by the substitution method.
A. (1, 9)
B. (2, 8)
C. (-2, 9)
D. no solution
Answer: B
Mathematics
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Provide an appropriate response.Use a U.S. customary ruler to measure the line below to the nearest sixteenth of an inch: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Rationalize the denominator. Assume all variables represent positive real numbers.
A. 
+ 9
B. x - 9
C. 
- 9
D. x + 9
Mathematics
Write the mixed number as an improper fraction.6
A. 
B. 
C. 
D. 
Mathematics
Find the sum of the indicated terms of the geometric sequence. ? 4, 8, 16 ... (to 8 terms) ?
A. 
B. ?
C. ?
D. ?
E. none of the above
Mathematics