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Mathematics
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Solve the problem.An airplane travels at 195 km/h for 1 hr in a direction of 287° from Greenville. At the end of this time, how far west of Greenville is the plane (to the nearest kilometer)?
A. 186 km B. 204 km C. 57 km D. 60 km
Mathematics
Solve.x2 + 8x + 16 = -11
A. 7
B. 4 ± 
C. ±i
D. -4 ± i
Mathematics
Find the sum of the geometric sequence.2, -8, 32, -128, 512
A. -682 B. 410 C. -410 D. 682
Mathematics
Solve the problem.Suppose that the manufacturing cost of a precision instrument is approximated by 
where x is the cost of materials and y is the cost of labor. Find 
A. 182 B. 231 C. -4 D. 19
Mathematics