Use the left-to-right elimination method to solve the system.
?
?
A. solution: 
B. solution: 
C. solution: 
D. solution: 
E. solution: 
Answer: A
Mathematics
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Find the values of x for which the geometric series converges.
A. - 
< x < 
B. - 
< x < 0
C. 0 < x < 
D. 0 < x < 
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If ?ABC ~ ?A'B'C', BC = 18 cm, B'C' = 28 cm, and AC = 45 cm, find A'C'.
What will be an ideal response?
Mathematics
Simulate 20 rolls of a pair of dice where the sum is observed. Give the relative frequency and corresponding theoretical probability of each of the outcomes. Make a table showing your results. The simulation is shown below. 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. -2x9y15 B. 4x6y10 C. 2x6y10 D. -2x6y10
Mathematics