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Mathematics, 21.06.2019 13:30
Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?
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Mathematics, 21.06.2019 18:00
The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.
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Mathematics, 21.06.2019 20:30
Find the nonpermissible replacement for binthis expression.b2/5b +5
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Mathematics, 21.06.2019 22:30
What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)
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