User row operations to change the matrix to reduced form.
A. 
B. 
C. 
D. 
Answer: B
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Add or subtract as indicated.Add.-4z4 + 6z3
A. -4z4 + 7z3 - 12z B. -3z4 + 6z3 - 12z C. -4z4 + 5z3 + 12z D. -4z4 + 7z3 + 12z
Shade the solution set in the xy-plane.
- 
? 1x2 + y2 ? 36
A. 
B. 
C. 
D. 
Find the product using the FOIL method.(z - 9)(z - 9)
A. 2z2 - 81 B. z2 - 18z + 81 C. z2 + 18z - 81 D. 2z + 81
A plane is flying with an airspeed of 160 miles per hour and heading of 140°. The wind currents are running at 41 miles per hour at 155° clockwise from due north. Use vectors to find the true course and ground speed of the plane. ? Apply the rules regarding the use of significant digits after all computations are complete. ?
A. 196 mph with heading 147° B. 200 mph with heading 145° C. 190 mph with heading 143° D. 190 mph with heading 145° E. 200 mph with heading 143°