Solve the system of equations by using an inverse matrix. 8x - y + 4z = 20 2x + 8y - 8z = 62 7x - 7y + z = -34
A. (3, 8, 1)
B. ?
C. (3, 1, 8)
D. (-3, 8, 6)
Answer: A
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Make a bar graph to represent the data.The following table shows the number of female infants born at Hospital X on New Year's Day (Jan. 1). Create a vertical bar graph.
What will be an ideal response?
6x - 60 + xy - 10y
A. (x - 10)(6 + y) B. (y - 10)(x + 6) C. (y - 10)(6x + y) D. (x - 10y)(6 + y)
Solve the following system by any appropriate method. If there is no real number solution, so state.xy = 1-20x - y = 9
A. (4, -4), (5, -5)
B. (-4, - 
), (-5, - 
)
C. (- 
, -4), (- 
, -5)
D. no real solution
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
During which hour did the temperature increase the most?
A. 10 a.m. to 11 a.m. B. 12 p.m. to 1 p.m. C. 9 a.m. to 10 a.m. D. 1 p.m. to 2 p.m.