Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].
A. 9; 180°
B. 3; 180°
C. 3; 90°
D. 3; 270°
Answer: B
Mathematics
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What value of x gives the minimum value of 
? Restrict your attention to the horizontal span of 0 to 19. Round your answer to two decimal places.
?
A. -3.65 B. 3.67 C. -0.17 D. 2.53
Mathematics
Evaluate the integral. The integral may not require integration by parts.
dx
A. - 
ln x - 
+ C
B. - 
ln x - 
+ C
C. - 
ln x - 
+ C
D. 
+ C
Mathematics
Solve the problem.Use the table to find the APR to the nearest whole percent. Assume that all interest rates are annual rates.
Sue took out a 24-month, $19,000 add-on loan at an interest rate of 8.1% to pay off her SUV.
A. 13% B. 15% C. 14% D. 16%
Mathematics
Find the absolute value of the complex number.z = 8i
A. 8 B. 8i C. -8 D. 64
Mathematics