Find a mathematical model representing the statement. (Determine the constant of proportionality.)
?
z varies jointly as x and y. 
?
A. 
B. 
C. 
D. 
E. 
Answer: E
Mathematics
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x and g(x) = - 
x
A. x B. 1 C. 0 D. -x
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Find the unknown complementary or supplementary angle.
A. 131° B. 126° C. 136° D. 146°
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Joan's test grade was 84. The class average was 72 and the standard deviation was 4.5. What statement best describes her z-score and her test grade?
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Write the statement as an absolute value inequality.x is within 3 units of 2
A. |3 - x| < 2 B. |x - 2| ? 3 C. |x - 2| < 3 D. |x - 3| < 2
Mathematics