Find the angle between u and v in radians.u = 4j - 3k, v = 2i - 2j - 6k
A. 1.26
B. 1.56
C. 0.31
D. 1.43
Answer: A
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Solve the problem.A power boat in still water maintains a speed of 45 miles per hour. The boat heads directly across a river perpendicular to the current which has a speed of 8 miles per hour. Find the actual speed and direction of the boat.
A. 17 miles per hour; 28° off course B. 46 miles per hour; 10° off course C. 22 miles per hour; 21° off course D. 45 miles per hour; 10° off course
This frequency table gives the distribution of ages of 100 people in a small town. 
How many people are:30 years of age or older but less than 40 years of age
A. 64 B. 18 C. 36 D. 22
The relationship between your shoe size S and the length of your foot L (in inches) is given by
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Perform the indicated operation. Write the answer in scientific notation.(4.4 × 10-5)(1.3 × 10-7)
A. 5.72 × 10-12 B. 5.72 × 10-2 C. 5.7 × 1012 D. 5.72 × 1012