Una maquina que fabrica tornillos produce un 3% de piezas defectuosas. Si hoy se han apartado 51 tornillos defectuosos cuantos t
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Interpreted: 
Let
(Interchange the x and y-values)
(Solve for y)
Let
To find the cross product, you can set this up as a proportion. Please see the attached paper for one of the proportions you could use.
You would then multiply the numbers that are diagonal from each other.
You would have 21(8) = 12x or
168=12x.
You would then multiply the numbers that are diagonal from each other.
You would have 21(8) = 12x or
168=12x.