Classify the angle as acute, obtuse, straight, or right.
A. Acute
B. Straight
C. Right
D. Obtuse
Answer: D
Mathematics
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Evaluate the root, if possible.
A. 
B. - 
C. Not real
D. - 
Mathematics
Simplify using scientific notation. Express the answer in standard notation.
A. .00000003 B. .000000064 C. .0301 D. .0602
Mathematics
Solve the problem.A communication satellite is orbiting far above Earth, as shown in the figure. If the radius of Earth is 
miles and the angle at S is 
how far is the satellite from the surface of the earth (closest to the equator)? Round your answer to the nearest mile. 
A. 16,609 mi B. 20,184 mi C. 20,569 mi D. 16,224 mi
Mathematics
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Mathematics