Find the inverse of the matrix. 
A. 
B. 
C. 
D. No inverse
Answer: C
You might also like to view...
Solve the inequality and graph the solution set.|2x + 1| ? 11
A. 
B. 
C. 
D. 
Solve the problem.Assume that the sales of a computer retail store are approximated by a linear function. Sales were 
in 
and 
in 
. Let 
represent 
alt="" style="vertical-align: -4.0px;" />. Find the equation giving yearly sales. Estimate sales in 
.
A. y = 404,000x + 890,000
y = 4,122,000 in 1989
B. y = 505,000x + 890,000
y = 4,930,000 in 1989
C. y = 505,000x + 890,000
y = 4,425,000 in 1989
D. y = 336,667x + 890,000
y = 3,920,001 in 1989
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.x2 - y2 = 7.82x = 2y - 5
A. (-6.31, 5.65), (2.97, 1.01) B. (-6.31, -5.65), (2.97, -1.01) C. (-2.97, -1.01), (6.31, -5.65) D. (-2.97, 1.01), (6.31, 5.65)
Solve the inequality, then graph the solution.8 + 7t + 9 ? 6t + 7
A. (-?, 7)
B. [-10 , ?)
C. (7, ?)
D. (-?, -10]