Simplify the radical expression by factoring out the largest perfect nth power. 
A. 4
B. 13
C. 5
D. 3
Answer: A
Mathematics
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Solve the problem.A railroad tunnel has the shape of half an ellipse. The height of the tunnel at the center is 42 ft and the vertical clearance must be 6 ft at a point 12 ft from the center. Find an equation for the ellipse, where x and y are measured in ft. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Use the slope-intercept form to graph the equation.y = 
x + 3
A. 
B. 
C. 
D. 
Mathematics
Evaluate the definite integral.
A. 
- 
B. 
- 
C. 
- 
D. 
- 
Mathematics
Solve.The following test scores were recorded for a student: 81, 76, 74, 70, 81, 62, 72. Find the mean, median, and mode test scores and determine which best represents a typical test score.
A. mean and median B. median and mode C. mean and mode D. mode
Mathematics