- Simple Math Question. Absolute Value reflection x-axis?

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If you started with 3.60g of Copper and reacted it with an excess of nitric acid what mass of copper hydroxide would you expect to recover? 6g of Mg in 16g of O2 are burnt. Calculate mass of MgO formed.? If 5sinθ = 3 determine the value of:
1. cos (θ-360)
2. Tan (squared)θ
3. Sin θ x cos θ (all divided by cos (squared θ)? I need news on the tremors/aftershocks/earthquake I am feeling in Maricopa county Arizona.? Find integers x and y such that 57x+79y=17, and 400