Find the rectangular form for the indicated power of the complex number.z4; z = 3
A. 81i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Answer: C
Mathematics
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Find v ? u.v = 4i - 8j and u = -9i + 3j
A. -12 B. -5i - 5j C. -36i - 24j D. -60
Mathematics
Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
A. 15 B. 14 C. 12 D. 11
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 0 B. -12 C. 1 D. -4
Mathematics
Substitute the given values for the variables and then solve the equation for the remaining variable. Round approximate results to the second decimal place.P = 2L + 2W; P = 20, W = 3
A. 17 B. 7 C. 8.5 D. 10
Mathematics