Find the determinant of the matrix and determine if the matrix is invertible 
What will be an ideal response?
0, not invertible
Mathematics
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Solve the equation.
x + 
= 
A. 3
B. 1
C. 
D. 
Mathematics
Multiply.-4 ? (-0.4) ? 7
A. -11.2 B. 112 C. 11.2 D. -112
Mathematics
Make the indicated conversions. ? 1 mm ?
A. 1,000 mL B. 0.1 mi C. 0.1 cm D. 0.001 km E. 1,000 mg
Mathematics
Simplify.7z - (20 - 4z)
A. 3z - 20 B. 11z + 20 C. 11z - 20 D. 3z + 20
Mathematics