Find the matrix product mentally, without the use of a calculator or pencil-and-paper calculations.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the equation.
= x
A. 4
B. 7
C. 
D. -4
Mathematics
Write a numerical expression for the phrase and simplify it.The sum of 23 and -5, divided by the product of 2 and -3
A. 
; - 18
B. 23 + 
; -3
C. 
; -3
D. 
; - 
Mathematics
Solve the system using the matrix inverse method.-3x - y - 3z = -23-6x + 8y - 8z = 28 9x - 6y + z = -27
A. {(2, 3, 8)} B. {(-2, 8, 4)} C. {(2, 8, 3)} D. ?
Mathematics
Use a commutative property to write an equivalent expression.5x
A. 
B. x - 5
C. 
D. x ? 5
Mathematics