- How we do this 2.75 -2 + -5.25?

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I need news on the tremors/aftershocks/earthquake I am feeling in Maricopa county Arizona.? If the earth is truly spherical, why do we not feel like we are standing upside down or sideways on the earth? i need answers please.? ~ x + y + z = 3, x² + y² + z² = 5, x³ + y³ + z³ = 7 ➪ x⁴ + y⁴ + z⁴ = ? Ayuda me sale error al intentar subir una foto a mi pregunta :((? 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)?