Write the system
?
?
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.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Multiply.110 ? 80
A. 8810 B. 8796 C. 8800 D. 8790
Mathematics
Graph the linear equation. Give the x- and y-intercepts.2x + y = 4
A. x-intercept: (- 2, 0); y-intercept: (0, 4)
B. x-intercept: (2, 0); y-intercept: (0, 4)
C. x-intercept: (4, 0); y-intercept: (0, 2)
D. x-intercept: (- 2, 0); y-intercept: (0, -4)
Mathematics
Find the sum or difference.(3 + 7x2 + 9x4 + 3x3) + (-7x3 - 9x2 + 6 + 3x4)
A. 6x18 + 9 B. 12x4 - 4x3 - 2x2 + 9 C. -4x4 - 4x3 + 15x2 + 6 D. 12x8 - 4x6 - 2x4 + 9
Mathematics
Provide an appropriate response.The polynomial -18t9 is called a ? .
Fill in the blank(s) with the appropriate word(s).
Mathematics