What are the coordinates of r180(r90(x, y)) if (x, y)=(-8,-4)? a.(8,4) b.(4,-8) ,8) ,-4)

Ou listened to a song on your computer. did you use hardware or software?

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

Which demographic challenge is europe currently experiencing? a. an aging and decreasing population b. a baby boomc. an unequal distribution between males and females d. a large group of teenagers moving through the school system(i chose a but i'm unsure)