250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.The average score on the exam was approximately
A. 85.
B. 10.
C. 95.
D. 75.
E. none of these
Answer: D
Mathematics
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Find the standard form of the equation of the ellipse satisfying the given conditions.Center at (0, 0); Focus at (0, 6); Vertex at (0, 7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
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A. {x|x ? 0} B. {0} C. {x|x ? 0} D. all real numbers
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Solve the equation. Express radicals in simplest form.4x2 + 3x + 8 = 0
A. {1, 6}
B. 
C. ?
D. 
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Does the pair of triangles appear to be similar? Write similar or not similar.
A. Similar B. Not similar
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