- What makes spectroscopic analysis important in chemistry?

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On an average day the cafeteria serves lunch to 530 students 2/5 of the students by dessert. How many students did not but dessert? Use the echelon method to solve the following system of two equations in two unknowns. 8x-7y=-1, -16x+14y=2? Do you believe the Earth is flat? Why or why not? Show all work. Find (fog)(1), (gof)(1), (fog)(x) and (gof)(x) f(x)=x^2+2 g(x)=4x-5 PLEASE HELP EXPLAIN THIS. I am desperate...........? MAKE u the subject of the formula D= ut+ kt square?