Rotate the axes so that the new equation contains no xy-term. Graph the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. 
B. 
Answer: B
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Solve.A road rises 80 feet in 350 feet. What is the gradient angle of the road? Round to the nearest minute.
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Here are boxplots for the times (in minutes) for the men and for the women in a race recently run in Chicago. Compare the times for the men and for the women and describe the distribution of the times for each group.
A. The median time for men is about 3 minutes larger than the median time for the women. The two distributions are very similar in shape and spread. For both groups, the 50% of times larger than the median are closer together than the 50% of times smaller than the median. B. Overall, men appear to run about 3 minutes faster than women. The median time for men is around 19 minutes while the median time for women is around 22 minutes. The two distributions are very similar in shape and spread. For both groups, the 50% of times larger than the median are closer together than the 50% of times smaller than the median. C. Overall, men appear to run about 3 minutes faster than women. The median time for men is around 19 minutes while the median time for women is around 22 minutes. The two distributions are very similar in shape and spread. For both groups, the 50% of times smaller than the median are closer together than the 50% of times larger than the median. D. Overall, men appear to run about 3 minutes faster than women. The median time for men is around 19 minutes while the median time for women is around 22 minutes. The times for the women are more consistent than the times for the men - the interquartile range and range are smaller for the women than for the men. For both groups, the 50% of times smaller than the median are closer together than the 50% of times larger than the median.
Solve.4(2z - 5) = 7(z + 2)
A. 6 B. -6 C. -2 D. 34
Solve the application problem.The function F(C) = 
C + 32 is used to convert a Celsius temperature C to an equivalent Fahrenheit temperature. What Fahrenheit temperature is equivalent to a Celsius temperature of 10°C?
A. 86°F B. 104°F C. 50°F D. 68°F