Find the product.- 
A. - 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the system of equations using matrices. Use Gaussian elimination with back-substitution. x + y + z= 2 x - y + 5z=-42x + y + z= 7
A. {(5, -2, -1)} B. {(-2, -1, 5)} C. {(5, -1, -2)} D. {(-2, 5, -1)}
Mathematics
Determine whether the function is invertible.The function that pairs the temperature at 3:00 pm in your city in degrees Fahrenheit with the temperature in degrees Celsius.
A. Yes B. No
Mathematics
Tell whether or not the rational expressions are equivalent.
, 
A. Yes B. No
Mathematics
Find the perimeter.
A. 92 m B. 33 m C. 432 m D. 49 m
Mathematics