Determine the row operation that was used on the first matrix to obtain the second matrix.
, 
What will be an ideal response?
3R2 ? R2
Mathematics
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Add and simplify. Write the answer as a mixed number as needed.1
+ 5
A. 6
B. 7
C. 6
D. 6
Mathematics
Write the system
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as a matrix equation AX = B, where A is the coefficient matrix of the system, X is a column matrix of variables, and B is the column matrix of constants. Multiply each side of the equation on the left by the matrix inverse of A to obtain an equivalent system of equations and solve it.
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A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Use the given values of the variables to find the value of the expression.7x - 6y - 8 for x = -2, y = 8
A. 0 B. -10 C. 60 D. -70
Mathematics
Simplify the trigonometric expression by following the indicated direction.Rewrite over a common denominator: 
+ 
What will be an ideal response?
Mathematics