Multiply and simplify.
? 
A. 
B. 
C. 
D. 120xy
Answer: A
Mathematics
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Solve the problem.Draw a triangle so that tan 
= u. The hypotenuse of the triangle with have length 
. Use the illustration and the double angle formulas to write sin ? and cos ? in terms of u. 
What will be an ideal response?
Mathematics
Solve the equation symbolically.
+ 
= - 
A. - 
B. 
C. - 
D. 
Mathematics
Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(2 - 2i)5
A. -64
+ 64i
B. -
+ i
C. -64 + 64i
D. -128 + 128i
Mathematics
Write a system of linear inequalities that has the given graph.
A. y ? 0, x ? 0, x ? 6, and y + x ? 2 B. y ? 0, x ? 0, x ? 6, y ? 7, and y + x ? 2 C. y ? 0, x ? 0, y ? 7, and y + x ? 2 D. x ? 6, y ? 7, and y + x ? 2
Mathematics