Perform the operation. Write the answer as a fraction in lowest terms.
+ 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.A bullet is fired with a muzzle velocity of 1,449 ft/sec from a gun aimed at an angle of 7° above the horizontal. Find the vertical component of the velocity.
A. 1,438 ft/sec B. 177.9 ft/sec C. 1,092 ft/sec D. 176.6 ft/sec
Mathematics
150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.Assuming there were no outliers, the lowest score on the exam was around
A. 65. B. 35. C. 0. D. 10. E. none of these
Mathematics
Find the length of the indicated portion of the curve.r(t) = (2cos t)i + (2sin t)j + 3tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Plot the given point in a rectangular coordinate system.(-4, 5)
A. 
B. 
C. 
D. 
Mathematics