Write the statement indicated.State the contrapositive of the following:If he is happy, then he is smiling.
A. If he is smiling, then he is happy.
B. If he is not happy, then he is not smiling.
C. If he is happy, then he is not smiling.
D. If he is not smiling, then he is not happy.
Answer: D
Mathematics
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Write the Babylonian numeral for the given Hindu-Arabic numeral.8447
A. 
B. 
C. 
D. 
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Graph the system of inequalities.y ? 3x + 2x + y ? -3
A. 
B. 
C. 
D. 
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Identify the equation without applying a rotation of axes.2x2 + 6xy + 9y2 + 2x - 3y + 1 = 0
A. ellipse B. hyperbola C. parabola D. not a conic
Mathematics
Add or subtract as indicated. Make sure that your answer is reasonable by estimating first.10.4 - 6.79
A. 3.61 B. 17.19 C. -3.61 D. 3.71
Mathematics