Solve the problem.What is the difference in the lengths 6 km and 440 m? Give your answer in meters.
A. 5560 m
B. 6440 km
C. 6440 m
D. 59,560 m
Answer: A
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Write the decimal of the point shown on the number line.
0.4?0.45?0.5
A. 0.44 B. 0.41 C. 0.42 D. 0.415
Evaluate the polynomial.-4x2 - 2x - 10for x = -3
A. 8 B. -50 C. -40 D. -44
Provide an appropriate response.For any augmented matrix of a system of linear equations, which of the following row transformations will not necessarily result in a matrix of an equivalent system?(i) Adding to the elements of any row a multiple of the corresponding elements of another row.(ii) Interchanging any two columns.(iii) Multiplying the elements of any row by the corresponding elements of another row.(iv) Multiplying the elements of any row by any nonzero number.
A. (ii), (iii), (iv) B. (ii), (iii) C. (ii) D. (i), (iv)
Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution. 6x - y - 6z=-21 -4x + 7z= 30 2y + z= 12
A. (-3, 6, 3) B. (3, 6, 3) C. (-3, 3, 6) D. (3, 3, 6)