exam
Maths Puzzle
Numerical Ability
solve
9x^2=14
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exam Other Question
Anne and Nancy use a metal alloy that is 19.75% copper to make jewalry. How many ounces of an 18% alloy must be mixed with a 21% alloy to form 108 ounces of the desired alloy?
how do you find the b and solution of this equation? y=-3/4x