Write the expression in the standard form a + bi.
A. 3 - 
i
B. 
+ 
i
C. 3 + 0i
D. 
- 
i
Answer: B
Mathematics
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Solve the problem.A 53 mph wind is blowing toward the north. At what speed should a plane head due east to be on a bearing of E 62.6° N? Find the ground speed of the plane.
A. 230 mph B. 115 mph C. 60 mph D. 173 mph
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Solve the problem.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). Use the equation of the least squares line to predict the growth of a plant if the temperature is 61. 
A. 27.47 mm B. 27.96 mm C. 28.45 mm D. 26.19 mm
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Solve the problem.If v = 5i + j and w = 9i + j, find 
.
A. 10
B. 6
C. 4
D. 2
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Differentiate the function.
Mathematics