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Maths Puzzle
Numerical Ability
give the coordinates of the focus and the equation of the directrix for the parabola with equation x=-4y^2
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book Other Question
Jenny has 175 coins in a jar. They consist of nickels and dimes only. The total value of the 175 coins is $11.90. How many nickels and dimes are there in Jenny's jar?
Please Help I am totally stuck
Combine: 2y√[27x^3z] – 3x√[3xy^2z]
Thanks so much!!!!