- Use sum to product formulas for sin(x+5pi/2) + sin(x-pi/2)?

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What is the best thing to eat at oceanaire. I'm a seafood fan , what appetizers and dinner? BIOLOGY QUESTION ABOUT THE BRAIN? Thanks in advance. If f(x) is (x^2)+5 when x < 2 and f(x) is 7x-5 when X is greater or equal than 2, then what must be true? Given the following reaction:
C3H8+ 5O2= 3CO2+ 4H2O
determine the number of moles of carbon dioxide produced
need setup/formula thanks!!!!? How many moles of fluorine are required to produce 12 grams of KrF6? Given the equation Kr+3F2=KrF6?