anonymous
  • anonymous
What property is shown? –8 + (–15) = (–15) + (–8) A. commutative property B. associative property C. opposite of a sum property D. distributive property
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@texaschic101
anonymous
  • anonymous
@pooja195
Michele_Laino
  • Michele_Laino
hint: when I swap the operands, I'm applying the commutative property

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More answers

anonymous
  • anonymous
A. commutative property
anonymous
  • anonymous
A? im not good with math
Michele_Laino
  • Michele_Laino
that's right!
anonymous
  • anonymous
oh i pressed enter
anonymous
  • anonymous
lol i have 4 more plz
Michele_Laino
  • Michele_Laino
ok!
anonymous
  • anonymous
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)
anonymous
  • anonymous
i think D
Michele_Laino
  • Michele_Laino
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
Michele_Laino
  • Michele_Laino
and*
Michele_Laino
  • Michele_Laino
so, you are right!
anonymous
  • anonymous
What is the value of the expression? 12.4 + (–2 + 1.6) A. 11 B. 12 C. 15 D. 16
Michele_Laino
  • Michele_Laino
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=...?
anonymous
  • anonymous
i think B
Michele_Laino
  • Michele_Laino
that's right!
anonymous
  • anonymous
What value of q makes the statement true? –(q + 14) = –3 + (–14) A. –17 B. –3 C. 3 D. 17
Michele_Laino
  • Michele_Laino
at the rigt side we can write this: -3+(-14)=-3-14=...? please complete
Michele_Laino
  • Michele_Laino
right*
anonymous
  • anonymous
-3+(-14)=-3-14=im thinking
Michele_Laino
  • Michele_Laino
ok! and what is -3-14=...?
anonymous
  • anonymous
wait i think A
anonymous
  • anonymous
am i correct
Michele_Laino
  • Michele_Laino
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?
anonymous
  • anonymous
-17
Michele_Laino
  • Michele_Laino
we have to find a number which added to 14 gives 17. what is such number?
anonymous
  • anonymous
ok i had it but u r confusing me
anonymous
  • anonymous
3 i guess
Michele_Laino
  • Michele_Laino
q=3 because 3+14=17
anonymous
  • anonymous
ohhhh ok
Michele_Laino
  • Michele_Laino
that's right, your option is C
anonymous
  • anonymous
Use an addition property to solve for c. 14 + (–12) = –12 + c A. –26 B. –14 C. 14 D. 26
anonymous
  • anonymous
last 1
Michele_Laino
  • Michele_Laino
if I apply the commutative property, I can write this: 14+(-12)=-12+14 so, what is c?
anonymous
  • anonymous
14=C
Michele_Laino
  • Michele_Laino
correct!!
anonymous
  • anonymous
yay i got a 100
Michele_Laino
  • Michele_Laino
:) :)
Michele_Laino
  • Michele_Laino
congratulations!!

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