Provide an appropriate response.Suppose that you are solving a system of three linear equations and three variables by the row echelon method and you obtain the following augmented matrix. 
What row transformation would you perform next?
A. Add -2 times row 1 to 10 times row 3 to obtain a zero in the third row, second column position.
B. Multiply row 2 by 
.
C. Multiply row 1 by 
.
D. Add row 1 to row 2.
Answer: B
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Divide.(x3 - 2x2 + 2x - 7) ÷ (x + 4)
A. x2 - 6x + 26 + 
B. x3 - 2x2 + 26x - 111
C. x2 - 6x + 10 + 
D. x2 - 6x + 26 + 
Solve the triangle.a = 10, b = 10, c = 8
A. A = 67.4°, B = 67.4°, C = 45.2° B. A = 66.4°, B = 66.4°, C = 47.2° C. A = 66.4°, B = 47.2°, C = 66.4° D. A = 47.2°, B = 66.4°, C = 66.4°
Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-6.2 + 11.1
A. 4.9 B. 17.3 C. -4.9 D. -17.3
Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(2, 9)} B. {(3, 9)} C. {(3, 8)} D. {(2, 8)}