Simplify the expression.
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Express the vector as a product of its length and direction.
i - 
j + 
k
A. 
B. 
C. 
D. 
Mathematics
Graph the polar equation.r = 3 + sin ?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If an earthquake measured 6.1 on the Richter scale, what was the intensity of the earthquake? 
Round to the nearest whole number.
A. 125,893 B. 1,000,000 C. 1,258,925 D. 446
Mathematics
Find the distance between the points.(-3, 8) and (1, 5)
A. 
B. 10
C. 5
D. -5
Mathematics