Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this.x + y = -1x - y = -7
A. No solution
B. (-4, 3)
C. (4, 4)
D. (-5, 4)
Answer: B
Mathematics
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Four players (A, B, C, and D) agree to divide the 15 items shown below by lining them up in order and using the method of markers. The players' bids are as indicated.
Item 15
A. goes to A. B. goes to B. C. goes to C. D. goes to D. E. is left over.
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Answer the following statement true (T) or false (F)
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Find all complex solutions.x4 + 8x2 - 9 = 0
A. ±1, ±3i B. ±1, ±3 C. ±i, ±3i D. ±3, ±i
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Express the product as a sum containing only sines or cosines.sin(9?) cos(5?)
A. 
[sin(14?) + sin(4?)]
B. 
[cos(14?) - cos(4?)]
C. sin cos(45?2)
D. 
[sin(14?) + cos(4?)]
Mathematics