Solve.An automotive technician has recorded the number of hours of labor required for each of the last eight engine rebuilds. Find the range of these times.21.518.722.320.917.619.821.220.7
A. 5.2 hours
B. 17.7 hours
C. 17.6 hours
D. 4.7 hours
Answer: D
Mathematics
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Factor completely.49k3m + 70k2m2 + 25km3
A. km(7k + 5m)(7k - 5m) B. km(7k - 5m)2 C. km(7k + 5m)2 D. Prime
Mathematics
Find all specified roots.Cube roots of -8
A. -2, 1 + 
i, -1 - 
i
B. -2, -1 - 
i, 1 - 
i
C. -2, 1 + 
i, 1 - 
i
D. -2, -1 + 
i, -1 - 
i
Mathematics
Find an equation for the line with the given properties.Perpendicular to the line 5x - 4y = -3; y-intercept = -4
A. 5x - 4y = -20 B. -4x - 5y = 16 C. -4x - 5y = 20 D. 5x - 4y = 16
Mathematics
Find the perimeter. Use 3.14 for ? when needed.
A. 167.316 km B. 72.67 km C. 136.815 km D. 56.185 km
Mathematics