Which property does each equation demonstrate? x2 + 2x = 2x + x2

(3z4 + 2z3) – (2z4 + z3) = z4 + z3

(2x2 + 7x) + (2y2 + 6y) = (2y2 + 6y) + (2x2 + 7x)

Compare and contrast ionic, covalent, and metallic bonds. Identify at least one similarity or difference between each pair of bond types (ionic-covalent, ionic-metallic, metallic-covalent).

Which statement is true? the given sides and angles cannot be used to show similarity by either the sss or sas similarity theorems. the given sides and angles can be used to show similarity by the sss similarity theorem only. the given sides and angles can be used to show similarity by the sas similarity theorem only. the given sides and angles can be used to show similarity by both the sss and sas similarity theorems.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

A. the following events are mutually exclusive: living in california and watching american idol. true or false b. the number of patients seen by an outpatient practice is an example of a discrete random variable. true or false c. the law of large numbers states that as the number of times an event experiment is conducted increases, the likelihood of the actual probability of an event approaching the theoretical probability decreases. true or false d. measuring the time it takes for patients to enter the operating room is an example of a continuous random variable. true or false