Evaluate the expression without using a calculator, and write your answer in radians.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Solve the problem.A space shuttle is in a circular orbit 250 km above the Earth's surface. Use Kepler's third law( with 
) to find the orbital period of the satellite.(G = 6.67 × 10-11 Nm2 kg-2, 
and Earth's radius is 
).
A. T = 1 hr B. T = 9 min C. T = 2 hr D. T = 90 min
Mathematics
Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = 
x2 + 
x - 1 
A. 
B. 
C. 
D. 
Mathematics
Simplify.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 7x7y8 
B. 7x3y4 
C. 7y4 
D. 7x3y4 
Mathematics