- My welding lens is not etched. how do i find out what the shade number is?

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Solving using laplace transform? y" +3y' + 2y =t? initial conditions are y(0)=1, y'(0)=0? Find the center and radius of the circle defined by the equation x^2+y^2-6x+2y-6=0.? One race car has greater acceleration than second race car.But the second race car can reach a higher speed than first.How is this possible? 1/2k when k = 3/4? Compre un auto , firme y dieron salida, ahora llaman y dicen que no debería llevar rines de aluminio, quieren que los regrese, ¿que procede?