- Is quadratic function the same as quadratic polynomials?

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I need help with this math problem it seems simple but im confused.? If 15.5 g of Iron metal at 99.9 degrees C is dropped into 200.0 mL of water at 23.0 degrees C, what will be the final temperature of the met? Determine o cosseno do ângulo da reta (r): X=(2,0,1) + t (-1,-2,-2) com a reta definida pelos pontos A(4,0,-1) e B(-2,-3,1).? Metal and water? What does 3((5/12)+(3/8)) equal to?