Linux is a kind of software whose code is provided for use, modification, and redistribution. what kind of software is this?

Need asap write a short paper describing the history and differences between six sigma, waterfall, agile, and scrum models. understanding these models can give you a good idea of how diverse and interesting it development projects can be. describe what the rationale for them is and describe their key features. describe the history behind their development. at least 400 words

Write pseudocode to represent the logic of a program that allows the user to enter a value. the program multiplies the value by 10 and outputs the result.

Aspeed limit sign that says "night" indicates the legal speed between sunset and sunrise.