Which of the following has angles that cannot be changed??
A. ?A triangle with three given sides.
B. ?A rectangle with four given sides.
C. ?Two given sides forming a central angle at their endpoints.
D. ?A parallelogram with four given sides.
E. ?All of the above.
Answer: A
Mathematics
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A. x = -9, y = -1 B. x = -5, y = 7 C. x = 5, y = 7 D. The system is inconsistent.
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Multiply or divide as indicated. Write the answer in lowest terms.
? 
A. 
B. 
C. 
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Write the number as the product of a real number and i.
A. -i
B. 11i
C. 11
D. -11i
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