Solve the problem.Let angle POQ be designated ?. Angles PQR and VRQ are right angles. If ? = 45°, find the exact length of OU. 
A. 0
B. 
C. 
D. 1
Answer: C
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Multiply.13.93 × 0.0080
A. 0.11144 B. 0.12144 C. 0.10144 D. 0.21144
Group the objects into classes so that all the elements within each class are topologically equivalent and no elements from different classes are topologically equivalent.A. a glassB. a bowling ballC. a sheet of typing paperD. a rulerE. a sphere
A. A, B, C, D and E B. A, B, C, and E; D C. A, B, C, and D; E D. A; B, C, D and E E. A, C and E; B; D
Place the correct symbol, >, <, or =, in the blank in the given pair of fractions.
A. = B. < C. >
Solve the problem.The orbit of a planet in a distant system is an ellipse with a sun at one focus. For x and y in millions of miles, the equation of the orbit is 
Find the smallest distance (the perigee) from the planet to the sun. (Use the fact that 
where 
) 
A. 81.6 million mi B. 75.1 million mi C. 87.9 million mi D. 75.3 million mi