Solve the problem.In how many ways can 7 people be lined up?
A. 7
B. 1
C. 5040
D. 2520
Answer: C
Mathematics
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Find the Jacobian 
or 
(as appropriate) using the given equations.x = 9u cosh 2v, y = 9u sinh 2v
A. 162v B. 36v C. 36u D. 162u
Mathematics
Provide an appropriate response.True or false? The equation (x + 13)2 = 0 has exactly one real solution. If false, give the correct number of real solutions.
A. False; three B. False; two C. False; zero D. True
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 
Mathematics
Graph the parabola.f(x) = x2 + 3x - 8
A. 
B. 
C. 
D. 
Mathematics