Rotate the axes so that the new equation contains no xy-term. Graph the new equation.xy +16 = 0
A. 
B. 
Answer: A
Mathematics
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For the given data value, find the standard score and the percentile.A data value 1.3 standard deviations above the mean.
A. z = -1.3; percentile = 9.68 B. z = 1.3; percentile = 2.2 C. z = 1.3; percentile = 90.32 D. z = 0.13; percentile = 55.96
Mathematics
Write the ratio as a fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Find the derivative.y = 
A. y' = 1 + 
B. y' = x + 
C. y' = 1 - 
D. y' = 1 + 
Mathematics
Solve.To get credit for graduation, Brittany completed 20 hours of community service. She worked at a soup kitchen for 
of the time. She picked up litter along highways for 
of the time. The rest of the hours she spent tutoring younger children after school. How much time did Brittany spend tutoring?
A. 14
hours
B. 13
hours
C. 15
hours
D. 13
hours
Mathematics