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The heliocentric model of our solar system was first suggested by

Retrograde motion of the planets is due to the fact that

Which star is at the highest point in the sky when you located on the earth’s north pole?

In the pic below, find the value of “b” if a = [a], and c = [c].  Round to 3 decimal places.

Find the arclength along the edge of a circle if the radius is [a] cm and the angle subtended is [b] o. Round your answer to 3 decimal places.

Find the  missing part (B) to the equation below of the plane containing ([a], [b], [c]) , (4, -2, 6),  and (2, 3, 5).   A(x – [a])+ B(y – [b]) + C(z – [c]) = D

Which picture below would match the graph of:

33. Which of the following is true of the heart rate change during exercise?

The angular distance of a star from the Celestial Equator is

Which of the following pair of coordinates defines a single point in the sky