Given matrices A = 
, B = 
, and C = 
, decide if the statement is true or false.(AB)C = A(BC)
A. True
B. False
Answer: A
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Use a graphing calculator to graph the equation and identify the x-intercepts. If your answers are not exact, round to the nearest tenth.y = x2 + 5.2x + 5.3
A. x-intercepts: (-3.8, 0) and (-1.4, 0)
B. x-intercept: (0, 5.2)
C. x-intercept: (0, 5.3)
D. x-intercept: (1.4, 0) and (3.8, 0)
Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 120 feet. The height of the arch 27 feet from the center is to be 7 feet. Find the height of the arch at its center.
A. 15.56 ft B. 7.18 ft C. 27.19 ft D. 7.84 ft
Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates is a real number.
A. Always B. Sometimes C. Never
Evaluate.9 ? 92
A. 81 B. 27 C. 729 D. 90