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anonymous

  • one year ago

What property is shown? –8 + (–15) = (–15) + (–8) A. commutative property B. associative property C. opposite of a sum property D. distributive property

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  1. anonymous
    • one year ago
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    @texaschic101

  2. anonymous
    • one year ago
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    @pooja195

  3. Michele_Laino
    • one year ago
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    hint: when I swap the operands, I'm applying the commutative property

  4. anonymous
    • one year ago
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    A. commutative property

  5. anonymous
    • one year ago
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    A? im not good with math

  6. Michele_Laino
    • one year ago
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    that's right!

  7. anonymous
    • one year ago
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    oh i pressed enter

  8. anonymous
    • one year ago
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    lol i have 4 more plz

  9. Michele_Laino
    • one year ago
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    ok!

  10. anonymous
    • one year ago
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    Which is an example of the opposite of a sum property? A. –17 + 32 = 32 + (–17) B. –26 + (4 + 8) = (–26 + 4) + 8 C. –5(6 + 3) = –5(6) + –5(3) D. –(–17 + 5) = 17 + (–5)

  11. anonymous
    • one year ago
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    i think D

  12. Michele_Laino
    • one year ago
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    in general the opposite of a sum is given by the subsequent formula: \[ - \left( {a + b} \right) = - a - b\] where a qnd b are two real numbers

  13. Michele_Laino
    • one year ago
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    and*

  14. Michele_Laino
    • one year ago
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    so, you are right!

  15. anonymous
    • one year ago
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    What is the value of the expression? 12.4 + (–2 + 1.6) A. 11 B. 12 C. 15 D. 16

  16. Michele_Laino
    • one year ago
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    we have to solve the computation inside the parentheses, so we have: 12.4+(-2+1.6)=12.4+(-0.4)=12.4-0.4=...?

  17. anonymous
    • one year ago
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    i think B

  18. Michele_Laino
    • one year ago
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    that's right!

  19. anonymous
    • one year ago
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    What value of q makes the statement true? –(q + 14) = –3 + (–14) A. –17 B. –3 C. 3 D. 17

  20. Michele_Laino
    • one year ago
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    at the rigt side we can write this: -3+(-14)=-3-14=...? please complete

  21. Michele_Laino
    • one year ago
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    right*

  22. anonymous
    • one year ago
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    -3+(-14)=-3-14=im thinking

  23. Michele_Laino
    • one year ago
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    ok! and what is -3-14=...?

  24. anonymous
    • one year ago
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    wait i think A

  25. anonymous
    • one year ago
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    am i correct

  26. Michele_Laino
    • one year ago
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    more precisely: right side= -17 now we can rewrite your original expression, as below: -(q+14)=-17 from which I can write this: q+14=17 so, what is q?

  27. anonymous
    • one year ago
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    -17

  28. Michele_Laino
    • one year ago
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    we have to find a number which added to 14 gives 17. what is such number?

  29. anonymous
    • one year ago
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    ok i had it but u r confusing me

  30. anonymous
    • one year ago
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    3 i guess

  31. Michele_Laino
    • one year ago
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    q=3 because 3+14=17

  32. anonymous
    • one year ago
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    ohhhh ok

  33. Michele_Laino
    • one year ago
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    that's right, your option is C

  34. anonymous
    • one year ago
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    Use an addition property to solve for c. 14 + (–12) = –12 + c A. –26 B. –14 C. 14 D. 26

  35. anonymous
    • one year ago
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    last 1

  36. Michele_Laino
    • one year ago
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    if I apply the commutative property, I can write this: 14+(-12)=-12+14 so, what is c?

  37. anonymous
    • one year ago
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    14=C

  38. Michele_Laino
    • one year ago
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    correct!!

  39. anonymous
    • one year ago
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    yay i got a 100

  40. Michele_Laino
    • one year ago
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    :) :)

  41. Michele_Laino
    • one year ago
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    congratulations!!

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