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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 16:30
Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.
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Mathematics, 21.06.2019 20:30
What is the difference between the equations of a vertical and a horizontal line?
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Mathematics, 21.06.2019 23:00
What is the value of x in the equation7x+2y=48 when y=3
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11-1 practice and problem solving: a/b...
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