Math

Question: 1 The product of two positive numbers is 15876 and the large one is 9 times the other. Find the numbers.
Question:2
Th sum of the squares of two positive whole numbers is 794. If one of the numbers is 13 , find the other.

  1. 👍 4
  2. 👎 4
  3. 👁 3,192
  1. x y = 15876
    y = 9 x
    so
    9 x^2 = 15876
    x^2 = 1764
    x = 42
    ===================
    169 + x^2 = 794
    x^2 = 625
    x = 25

    1. 👍 6
    2. 👎 3
  2. 1 .

    a = first number

    b = second number

    The large one is 9 times the other.

    This mean :

    b = 9 a

    a * b = 15876

    a * 9 a = 15876

    9 a ^ 2 = 15876 Divide both sides by 9

    a ^ 2 = 15876 / 9

    a ^ 2 = 1764

    a = sqroot ( 1764 )

    a = 42

    b = 9 a = 9 * 42 = 3789

    2.

    a = first number

    b = second number ( In this case b = 13 )

    The sum of the squares of two positive whole numbers is 794.

    This mean :

    a ^ 2 + b ^ 2 = 794

    a ^ 2 + 13 ^ 2 = 794

    a ^ 2 + 169 = 794 Subtract 169 to both sides,

    a ^ 2 + 169 - 169 = 794 - 169

    a ^ 2 = 625

    a = sqroot ( 625 ) = 25

    1. 👍 2
    2. 👎 1
  3. This is too good service to provide us

    Thanks for a provide a good maths

    1. 👍 3
    2. 👎 1
  4. Yi+5455=54

    1. 👍 0
    2. 👎 2
  5. 15

    1. 👍 1
    2. 👎 1
  6. Very good explanation.

    1. 👍 2
    2. 👎 0

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