Perform the indicated arithmetic.2
? 
A. 2
B. 
C. 1
D. 
Answer: D
Mathematics
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Solve the problem.Suppose you would like to cross a 223-foot wide river in a boat. Assume that the boat can travel 31 mph relative to the water and that the current is flowing west at the rate of 6 mph. What bearing should be chosen so that the boat will land at a point exactly across from its starting point? Give your answer to the nearest tenth of a degree.
A. 8.9° B. 78.8° C. 7.4° D. 11.2°
Mathematics
Solve the equation.3x2 - 21x + 30 = 0
A. {2, 5} B. {3, 2, 5} C. {0, 2, 5} D. {-2, -5}
Mathematics
Find all solutions of the equation. Express the solution in radians.cos x = 
A. 
+ 2n? or 
+ 2n?
B. 
+ 2n? or 
+ 2n?
C. 
+ 2n? or 
+ 2n?
D. 
+ 2n? or 
+ 2n?
Mathematics
Multiply. Simplify, if necessary.
? 
A. 
B. 
C. 
D. 4
Mathematics