Solve the system of equations by using the inverse of the coefficient matrix if it exists and by the echelon method if the inverse doesn't exist. 4x - 9y = 8 12x - 27y = -6
A. No inverse, 
B. No inverse, no solution for system
C. (8, -6)
D. (3, 3)
Answer: B
You might also like to view...
Solve the problem.A retailer finds that total cost per day is given by c = 16
+ 36 dollars, where c is cost and n is the number of units sold. What is c when 36 units are sold?
A. $30 B. $132 C. $102 D. $612
Solve the problem.The volume of a cube can be found by cubing the measure of one of its edges. Write an expression in exponential form to represent the volume of the cube in the figure if one edge measures S.
A. 4S3 B. 3S3 C. 3S D. S3
Graph the ellipse and locate the foci.9x2 + 4y2 = 36
A. foci at (2
, 0) and (-2
, 0)
B. foci at (
, 0) and (-
, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (
, 0) and (-
, 0)
Determine whether the equation is a linear equation in two variables.7x - 5y2 = 3
A. yes B. no