Find z1z2. Express the answer in standard form.z1 = 4(cos 315° + i sin 315°)z2 = 6
A. 24i
B. -24i
C. -24
D. 24
Answer: C
Mathematics
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Solve the system of linear equations. x - 7y = 82x - 7y = 9
A. (2, 1) B. No solution C. (1, -1) D. (2, -2)
Mathematics
Given that DB ? AC and B is the midpoint of AC; prove that ?ABD ? ?CBD.
Mathematics
Rationalize the denominator. Assume that all variables represent positive values.
A. 
B. 
C. 
D. 
Mathematics
Use a Venn Diagram and the given information to determine the number of elements in the indicated region.n(A ? B ? C) = 77, n(A ? B ? C) = 11, n(A ? B) = 24, src="https://sciemce.com/media/4/ppg__ttt0626191023__f1q339g6.jpg" alt="" style="vertical-align: -4.0px;" />
A. 10
B. 8
C. 9
D. 7
and 
Find
Mathematics