Solve the equation.
- 
= 1
A. {1}
B. 
C. 
D. 
Answer: A
Mathematics
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Find the velocity vector in terms of ur and u?.r = a(7 - cos ?) and 
= 5
A. v = (5a cos ?)ur + 5a(7 - sin ?)u? B. v = 5a(7 - cos ?)ur + (5a sin ?)u? C. v = (5a sin ?)ur + 5a(7 - cos ?)u? D. v = (7a sin ?)ur + 7a(5 - cos ?)u?
Mathematics
Solve the problem.For the pair of similar triangles, find the value of b.
A. 16 B. 12 C. 11 D. 4
Mathematics
Simplify. Do not use negative exponents in your answer.(mn)-8
A. 
B. 
C. 
D. m8n8
Mathematics
Solve the inequality symbolically. Express the solution set in interval notation.-11x + 6 ? -12x + 4
A. (-?, -2] B. [-2, ?) C. (-?, -11) D. (-11, ?)
Mathematics