– 6 + \sqrt{9 – 8a} = 1−6+ 9−8a ​ =1​

Question

– 6 + \sqrt{9 – 8a} = 1−6+
9−8a
​
=1​

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Minh Khuê 4 years 2021-09-04T05:50:08+00:00 1 Answers 3 views 0

Answers ( )

  1. thienthi
    0
    2021-09-04T05:51:12+00:00
    Reply

    Answer:

    a = -5

    Step-by-step explanation:

    Given

    - 6 + \sqrt{9 - 8a} = 1

    Required

    Solve for a

    - 6 + \sqrt{9 - 8a} = 1

    Add 6 to both sides

    6- 6 + \sqrt{9 - 8a} = 1+6

    \sqrt{9 - 8a} = 7

    Square both sides

    ( \sqrt{9 - 8a})^2 = 7^2

    9 - 8a = 49

    Subtract 9 from both sides

    9-9 - 8a = 49-9

    - 8a = 40

    Make a the subject

    a = -\frac{40}{8}

    a = -5

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