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. (i), (iv)
B. (ii), (iii), (iv)
C. (ii), (iii)
D. (ii)


Answer: C

Mathematics

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Evaluate the expression.

A.
B. 0
C. 1
D. 5

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Perform the indicated operation. Write the answer in scientific notation.(5.1 × 104) × (3.9 x 103)

A. 2.0 × 10-8 B. 1.989 × 108 C. 1.989 × 1012 D. 1.989 × 104

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Find the inverse of the function.f(x) = -x2 + 17, x ? 0

A. f-1(x) = - 
B. f-1(x) = x2 + 17
C. f-1(x) = 
D. f-1(x) = 

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Solve the problem.The equation F = C + 32 is used to convert a temperature given in degrees Celsius C to its equivalent temperature in degrees Fahrenheit F. Find the temperature C if the temperature F is 50 by solving the equation 50 = C + 32 visually, using the following graph. 

A. 18°C B. 38°C C. -38°C D. 10°C

Mathematics