Mathematics

9th

grade

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Math 9: 2nd quarter Summative Test

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20 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt

    Translate variation statement into mathematical statement: M varies directly as the square root of v

  • 2. Multiple Choice
    5 minutes
    1 pt

    Translate variation statement into mathematical statement: The weight (W) of circular disc varies jointly as the square of the radius (r) and its thickness (t).

  • 3. Multiple Choice
    5 minutes
    1 pt

    The current in an electrical conductor varies inversely as the resistance of the conductor. If the current is 12 ampere when the resistance is 240 ohms, what is the current when the resistance is 540 ohms?

    3.6 amperes

    5.33 amperes

    7.2 amperes

    27 amperes

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