Use the range rule of thumb to approximate the standard deviation.22, 29, 21, 24, 27, 28, 25, 36
A. 2.8
B. 4.2
C. 3.75
D. 1.65
Answer: C
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Solve the system of equations using the inverse of the coefficient matrix.-4x - y + 3z = -37-9x + 3y + 4z = -52-9x - 5y + z = -114
A. No solution B. x = -9, y = 7, z = 18 C. x = 9, y = 2, z = 7 D. x = 9, y = 7, z = 2
Solve the problem. Round to two decimal places if needed.A sector of a circle has an area of 94 square feet. Find the central angle (in radians) that forms the sector if the radius is 8 feet.
A. 1.47 radians B. 2.94 radians C. 3008 radians D. 6016 radians
Use Cramer's rule to solve the linear system.2x + 2y = 322x - 3y = -13
A. (-7, -9) B. (7, 9) C. (-9, 7) D. (9, 7)
Solve the problem.A rectangular garden has dimensions of 18 feet by 15 feet. A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 234 square feet?
A. 5.5 feet B. 5 feet C. 3 feet D. 4 feet