Find the exact value of the expression. Do not use a calculator.csc ?, if sin ? = - 
and cos ? < 0
A. 
B. 
C. - 
D. - 
Answer: D
Mathematics
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Let U = {q, r, s, t, u, v, w, x, y, z}, A = {q, s, u, w, y}, B = {q, s, y, z}, and C = {v, w, x, y, z}. List the elements in the following set.
? B
A. {r, s, t, u, v, w, x, z} B. {q, r, s, t, v, x, y, z} C. {s, u, w} D. {q, s, t, u, v, w, x, y}
Mathematics
Provide an appropriate response.In the figure below, BD = 
AB, and DE = FC = 
AC. Prove that ?EDF ? ?ECF.
What will be an ideal response?
Mathematics
Find the range of the quadratic function.f(x) = -x2 + 6x - 7
A. [2, ?) B. (-?, 3] C. (-?, 2] D. [3, ?)
Mathematics
Evaluate the integral.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics