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in 3 numbers the mean of the square of first 2 numbers is 26 and the mean of the square of the second and the first is 50 and the

By Josephine

in 3 numbers the mean of the square of first 2 numbers is 26 and the mean of the square of the second and the first is 50 and the mean of the square of the third and the first number is 40 then what are the three numbers? ​

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Josephine

Factorise the following by taking out the common factor
6xy – 4y2 + 12xy – 2yzx​

Express 45 % as a fraction in its lowest term with all the steps

2 thoughts on “in 3 numbers the mean of the square of first 2 numbers is 26 and the mean of the square of the second and the first is 50 and the”

  1. Answer:

    Let the three numbers be x,y and z

    It is given

    x^2+y^2=26×2=52….(1)

    y^2+z^2=100….(2)

    z^2+x^2=80…(3)

    from ,(2)

    y^2=100-z^2

    put this value of y^2 in (1)

    x^2+100-z^2=52

    x^2-z^2=-48

    Add this equation to (3) you will get

    2x^2=32 which gives x=4

    Put this value of x in equation (1) and (3) you will get y=6 and z=8

    So the numbers are 4,6,8

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