Find the cross-product and determine whether the proportion is true or false.
= 
A. 
? 84; false
B. 9 = 9; true
C. 36 ? 
; false
D. 21 = 21; true
Answer: D
Mathematics
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A. 0 B. -14 C. -28 D. 28
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A. 2
B. 
C. 
D. 51
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Solve the inequality.x(x + 3)(5 - x) ? 0
A. [0, 5] B. [-3, 5] C. [-3, 0] or [5, ?) D. (-?, -3] or [0, 5]
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Graph the hyperbola.16x2 = 9y2 + 144
A. 
B. 
C. 
D. 
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