Simplify.
A. 256a
B. 4a
C. 4
D. 4a2
Answer: B
Mathematics
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Write this word statement as an equation. Use x as the variable, and find all solutions from the set 
The sum of a number and 1 is 9.
A. x + 1 = 9; 8 B. x = 1 + 9 ; 10 C. x + 9 = 1; 8 D. x + 1 = 9; 9
Mathematics
Add or subtract as indicated.
+ 
A. x - 5
B. x + 6
C. x - 6
D. 
Mathematics
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 
Mathematics
Write the system of linear equations represented by the augmented matrix. Then use back-substitution to find the solution. Use variables x, y, and z.
A. 
B. 
C. 
D. 
E. 
Mathematics