If (y + 1) varies directly as square root of x and y =14 when x = 27, find the value of y when x = 64 without finding the

Question

If (y + 1) varies directly as square root of x and y =14 when x = 27, find the value of y when
x = 64 without finding the variation constant.​

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Amity 4 years 2021-07-26T17:12:00+00:00 1 Answers 19 views 0

Answers ( )

  1. Dau
    0
    2021-07-26T17:13:58+00:00
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    Answer:

    22.1 or 22

    Step-by-step explanation:

    Y + 1 varies√x

    Y + 1 = K√x ( k is costant)

    so we solve for K

    given: 14 + 1 = K√27

    15 = K√27

    divide both sides by √27

    15/√27 = K

    to find the value of y

    y + 1 = 15/√27 (8) : substitute K for 15/√27

    Y + 1 = 120/√27

    i.e Y = 120/√27 – 1

    Y = 23.1 – 1

    Y = 22.1 or 22

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