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rockets31

  • 4 years ago

what does the @ sign mean in algebra

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  1. precal
    • 4 years ago
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    does not have meaning that I am aware of. Did you see it in a SAT question?

  2. rockets31
    • 4 years ago
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    no my algebra teacher put it on a worksheet

  3. precal
    • 4 years ago
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    post the question, but you might want to ask you teacher. Maybe it is a typo and they meant the number 2

  4. rockets31
    • 4 years ago
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    a@b =2a/b and a#b- 2a^2 +3b-5 find the value of 3@(2#4)

  5. precal
    • 4 years ago
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    what is a# b - did you mean to write a#b = -2a^2+3b-5

  6. rockets31
    • 4 years ago
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    yes sorry

  7. precal
    • 4 years ago
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    well a is your 3 and b is your 2#3 they are using it as a place holder (for a lack of a better word) this means a=3

  8. precal
    • 4 years ago
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    ok Let me work this out for you. In SAT they sometimes use a heart or some type of symbol - means nothing just defines things

  9. rockets31
    • 4 years ago
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    ok i get that i just didnt know what to do with the @ sign

  10. rockets31
    • 4 years ago
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    thanks for your help

  11. precal
    • 4 years ago
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    ok here it goes a#b=\[-2a^2+3b-5\] 2#4 means a is 2 and b is 4 so sub 2#4=\[-2(2)^2+3(4)-5\]=-1

  12. rockets31
    • 4 years ago
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    that makes sense

  13. precal
    • 4 years ago
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    a@b = (2a)/b 3@(2#4)=3@-1 so a is 3 and (2#4) is -1 3@-1=(2*3)/-1=-6

  14. precal
    • 4 years ago
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    have fun, you will see these on SAT's

  15. rockets31
    • 4 years ago
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    ok ill try to :)

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