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Tabbiejack

Solve the equation. Check your solution. 4= √h-6 A. 10 B. 100 C. √10 D. 5

  • 10 months ago
  • 10 months ago

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  1. ToniStark
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    |dw:1370237549168:dw|

    • 10 months ago
  2. UnkleRhaukus
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    |dw:1370237614254:dw|

    • 10 months ago
  3. Tabbiejack
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    I got A is right

    • 10 months ago
  4. UnkleRhaukus
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    check it; is \(4= \sqrt{10}-6\) ? \[10=\sqrt{10}\] no.

    • 10 months ago
  5. UnkleRhaukus
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    \[4= \sqrt{h}-6\\4+6= \sqrt{h}\\10=\sqrt{h}\\10^2=h \]

    • 10 months ago
  6. Tabbiejack
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    ok so its d

    • 10 months ago
  7. UnkleRhaukus
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    check \[4= √5-6\\10=\sqrt5? \] no

    • 10 months ago
  8. Tabbiejack
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    c?

    • 10 months ago
  9. Tabbiejack
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    I dont get it

    • 10 months ago
  10. UnkleRhaukus
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    lets start for the start. \[4=\sqrt{h}-6\] add six to both sides \[4+6=\sqrt{h}-6+6\] tell me what you get when simplifying this

    • 10 months ago
  11. Tabbiejack
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    ok

    • 10 months ago
  12. UnkleRhaukus
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    ...

    • 10 months ago
  13. Tabbiejack
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    idk this is awful c right

    • 10 months ago
  14. UnkleRhaukus
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    \[4+6=\sqrt{h}-6+6\] simplify the term in the brackets \[(4+6)=\sqrt{h}+(-6+6)\]

    • 10 months ago
  15. Tabbiejack
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    O ok 100

    • 10 months ago
  16. UnkleRhaukus
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    what do you get when you simplify (4+6)?

    • 10 months ago
  17. Tabbiejack
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    10

    • 10 months ago
  18. UnkleRhaukus
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    right, what about (-6+6) ?

    • 10 months ago
  19. Tabbiejack
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    0

    • 10 months ago
  20. UnkleRhaukus
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    GOOD so you have \[10=\sqrt{h}\] Now square both sides \[10^2=\sqrt{h}^2\] simplify this

    • 10 months ago
  21. Tabbiejack
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    100

    • 10 months ago
  22. UnkleRhaukus
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    yes the left hand side = 100, what about the right hand side?

    • 10 months ago
  23. Tabbiejack
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    same

    • 10 months ago
  24. UnkleRhaukus
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    \[\sqrt h^2=h\]

    • 10 months ago
  25. UnkleRhaukus
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    so you have arrived at \[100=h\] now lets check. \[4= \sqrt{100}-6\] \[4=\sqrt{10^2}-6\\4=10-6\]

    • 10 months ago
  26. Tabbiejack
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    o ok that was confusing me....

    • 10 months ago
  27. Tabbiejack
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    so its B

    • 10 months ago
  28. UnkleRhaukus
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    yes, because 4=4 is always true

    • 10 months ago
  29. Tabbiejack
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    thanks so much!!

    • 10 months ago
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