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alahrichi1

  • 3 years ago

FAN AND MEDAL AWARDED Evaluate the expression, using the given value of the variable. z ÷ 3 – 5z + 4(z – 2) when z = 12 A. –98 B. –96 C. –16 D. –14

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  1. AravindG
    • 3 years ago
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    Ok use BODMAS rule and substitute x=12 in the equation

  2. AravindG
    • 3 years ago
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    @alahrichi1

  3. alahrichi1
    • 3 years ago
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    I did that and got -5

  4. AravindG
    • 3 years ago
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    try again?

  5. AravindG
    • 3 years ago
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    can u please show ur step then i can know where you are making mistake

  6. AravindG
    • 3 years ago
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    @alahrichi1 ?

  7. alahrichi1
    • 3 years ago
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    =12+3-5*12+4(12-2) =12+3-5*12+4*10 =12+3-60+4*10 =12+3-60+40 =15-100 =-85

  8. AravindG
    • 3 years ago
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    ok ur first step is right

  9. AravindG
    • 3 years ago
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    you considered the brackets and got 10

  10. alahrichi1
    • 3 years ago
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    yes..

  11. AravindG
    • 3 years ago
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    and note it is z/3 not z+3 !!

  12. alahrichi1
    • 3 years ago
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    OMG!!!!!!!!!!!! thanks sooo much!! thats where my mistake was!!!

  13. AravindG
    • 3 years ago
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    =12/3-5*12+4*10 =12/3-5*12+40 now do division

  14. AravindG
    • 3 years ago
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    yw :)

  15. alahrichi1
    • 3 years ago
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    ok 1 sec

  16. alahrichi1
    • 3 years ago
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    -96

  17. AravindG
    • 3 years ago
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    try again?

  18. AravindG
    • 3 years ago
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    show me ur step after =12/3-5*12+4*10 =12/3-5*12+40

  19. alahrichi1
    • 3 years ago
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    =4-60+40 =-96 :D

  20. AravindG
    • 3 years ago
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    -60+40=??

  21. AravindG
    • 3 years ago
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    reply pls i gotta sleep after finishing this !!

  22. AravindG
    • 3 years ago
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    @alahrichi1 .......

  23. alahrichi1
    • 3 years ago
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    -20

  24. AravindG
    • 3 years ago
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    -20+4=?

  25. alahrichi1
    • 3 years ago
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    no bro, not -60+40 its 4 minus 60

  26. AravindG
    • 3 years ago
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    both are same :)

  27. AravindG
    • 3 years ago
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    subtraction is actually a form of addition only :)

  28. AravindG
    • 3 years ago
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    whatevr way you do the answer will be same

  29. AravindG
    • 3 years ago
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    4-60=?

  30. AravindG
    • 3 years ago
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    please reply fast ?

  31. alahrichi1
    • 3 years ago
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    -56

  32. AravindG
    • 3 years ago
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    -56+40 =?

  33. alahrichi1
    • 3 years ago
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    -16

  34. AravindG
    • 3 years ago
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    :D you done it !!!

  35. AravindG
    • 3 years ago
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    if you did other way also you will get -16 see =4-60+40 =4-20 =-16

  36. AravindG
    • 3 years ago
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    beauty of mathematics !!

  37. alahrichi1
    • 3 years ago
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    omg dude u are a legend

  38. AravindG
    • 3 years ago
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    :D thanks ..nw i can sleep :)

  39. alahrichi1
    • 3 years ago
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    good nite

  40. AravindG
    • 3 years ago
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    thanks hav good day/night :)

  41. alahrichi1
    • 3 years ago
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    u too

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