- An object of hight 4 cm produces an upside down image of hight 2 cm. the magnification of this case?

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Verify that M(u,v)=A +u(B-A) +v(C -A) ( A,B,C vectors) is a parametric representation of surface of the triangle A(1,0,0) B(0,-1,2) C(0,2,1)? Number Theory: Find the roots of 4x^2+6x+1 in Z11 (could you please explain step by step? THANKS!)? If 7.46g of CrCl3 are dissolved in enough water to make 385 mL of solution, what is the molarity of the resulting solution? In one mole of the compound iron(III) oxide,
what fraction of the total number of ions is
the oxygen ion? Find all of the actual roots of the polynomial: x^3 - 2x^2 + 5x + 26 = 0?