Tell whether the following postulate or property of the plane Euclidean geometry has a corresponding statement in spherical geometry. Explain your reasoning or write the corresponding statement. 1. If two lines form vertical angles, then the angles are equal in measure.

2. if two lines meet a third line at the same angle, those lines are parallel.

3. Three lines can form two triangles.

4. Three non-parallel lines divide the plane into 7 separate parts.

Please help me! THIS IS DUE TODAY!!!

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons