Determine the direction angle for the vector. Round to the nearest tenth of a degree.v = -4i - 3j
A. none of these
B. 216.9°
C. 36.9°
D. 233.1°
Answer: B
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Find the dimension of the object and state whether or not it is a fractal.In measuring the volume of the object, when you reduce the length of your ruler by a factor of 3, the number of length elements increases by a factor of 36.
A. The dimension is 0.307 and the object is fractal. B. The dimension is 33 and the object is ordinary (non-fractal). C. The dimension is 4.262 and the object is fractal. D. The dimension is 3.262 and the object is fractal.
Simplify.
3
A. 
B. 
C. 4
D. 41
Rationalize the denominator.
A. 
B. 
C. 
D. 
Find the weighted average.Michael gets test grades of 70, 80, 81, and 87. He gets a 75 on his final exam. Find the weighted mean if the tests each count for 10% and the final exam counts for 60% of the final grade. Round to one decimal place.
A. 76.8 B. 78.6 C. 235.8 D. -82.2