anonymous
  • anonymous
What is the value of the expression –c + d when c = –3.5 and d = –12.8? A. –9.3 B. –16.3 C. 15.3 D. 16.3
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
B
anonymous
  • anonymous
+3.5-12.8 = -9.3
anonymous
  • anonymous
@Learner11 incorrect

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anonymous
  • anonymous
−3.5+−12.8= -16.3
anonymous
  • anonymous
-c+d =- (-3.5)+(-12.8) =+3.5-12.8 = -9.3
anonymous
  • anonymous
anonymous
  • anonymous
substitute -3.5 for c and -12.8 for d then do the math thats all you have to do when they give substitution numbers in the question.
anonymous
  • anonymous
am I right guys ?
anonymous
  • anonymous
yes
anonymous
  • anonymous
thanks . You can give me a medal :)
anonymous
  • anonymous
lol yeah :)
anonymous
  • anonymous
Learner11 :P
anonymous
  • anonymous
whats ur name
anonymous
  • anonymous
I told :P
anonymous
  • anonymous
cool u play 20 question
anonymous
  • anonymous
what?
anonymous
  • anonymous
do u play the game 20 questions
anonymous
  • anonymous
nope .
anonymous
  • anonymous
actualy it is 16.3 i redid my math it is b
anonymous
  • anonymous
But How ?
anonymous
  • anonymous
look if u substitute -3.5 for c and - 12.8 for d that would give u the equation -3.5+(-12.8 which =16.3 add it up in a calculator and you willl see

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