Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: A
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Express the following number in scientific notation: 0.0006173
a. 6.173 ð 104 b. 6.173 ð 10-4 c. 61.73 ð 104 d. 61.73 ð 10-4
Evaluate the expression for the given values of the variables, if possible.a ? (-b)
a = -11, b = -2
A. -122 B. -220 C. -22 D. -24
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 5x + 4y = 86x - 3y = 33
A. (-3, 4) B. (3, -4) C. (-4, 3) D. (4, -3)
Graph the pair of parametric equations by hand, using values of t in [-2,2]. Make a table of t-, x-, and y-values, using t = -2, -1, 0, 1, and 2. Then plot the points and join them with a line or smooth curve for all values of t in [-2,2]. Do not use a calculator.x = -t - 1, y = 2t - 3
What will be an ideal response?