Assume that the cities lie on the same north-south line and that the radius of the earth is 6400 km. Find the distance between City E, 35° N and City F, 44° S. (Round to the nearest kilometer.)
A. 1005 km
B. 997 km
C. 8824 km
D. 8832 km
Answer: C
Mathematics
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Solve the problem.Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students and B's to the next 23%. What is the bottom cutoff for a B grade? Round your answer to the nearest whole number.
A. 74 B. 66 C. 76 D. 71
Mathematics
Find the square of the radical expression.
A. 25 B. 12 C. 10 D. 5
Mathematics
Perform the operation indicated. Simplify.
- 
A. 
B. 
C. 
D. 
Mathematics
Determine the type of conic that is the graph of the equation.y2 - 2x2 + 2x + 4y + 2 = 0
A. hyperbola B. not a conic C. parabola D. ellipse
Mathematics