Solve the system of linear equations using matrices.
A. (-2, 1)
B. (1, -2)
C. ?
D. (-1, 2)
Answer: B
Mathematics
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Expand.(x-3 + 4x3)5
A. 
+ 
+ 
+ 640x3 + 5x9 + 1024x15
B. 
+ 
+ 
+ 640x3 + 1280x9 + 2x15
C. 
+ 
+ 
+ 640x3 + 1280x9 + 1024x15
D. 
+ 
+ 
+ 10x3 + 1280x9 + 1024x15
Mathematics
Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Mathematics
Use the data to complete the table.The following is the number of hours students studied per week on average. 
A. Frequency: 2, 4, 5, 4, 5 B. Frequency: 2, 3, 6, 5, 4 C. Frequency: 2, 4, 5, 5, 4 D. Frequency: 2, 4, 4, 6, 4
Mathematics
Solve the system by substitution.
A. (-4.55, -8.5) B. (-4.55, 8.5) C. (-8.5, -4.55) D. (8.5, -4.55)
Mathematics