anonymous
  • anonymous
Subtract. – 0.41 – 8.91 A. –9.32 B. –8.50 C. 8.50 D. 9.32
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
texaschic101
  • texaschic101
when adding/subtracting with signs....if the signs are the same, add them and use the same sign. If the signs are different, subtract them and use the sign of the bigger number.
anonymous
  • anonymous
i think D or A mostly D

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texaschic101
  • texaschic101
think about it....the signs are the same....so they are to be added and you would use the same sign....so it would be - 9.32....understand ?
texaschic101
  • texaschic101
It can get a little confusing because adding/subtracting with signs has a whole different set of rules then multiplying/dividing with signs
anonymous
  • anonymous
wait i was wrong it was A
texaschic101
  • texaschic101
it is A....signs are the same...so you add and keep the same sign
anonymous
  • anonymous
oh ok i have 2 more plz help
texaschic101
  • texaschic101
what ya got ?
anonymous
  • anonymous
Evaluate d – 7.5 when d = –3.82. A. –11.32 B. –3.68 C. 3.68 D. 11.32
texaschic101
  • texaschic101
ok....after subbing your problem becomes : -3.82 - 7.5.....look familiar....signs are the same....so add and keep the same sign
anonymous
  • anonymous
-11.32 i was thinking that
texaschic101
  • texaschic101
you got it :)
texaschic101
  • texaschic101
got another one ?
anonymous
  • anonymous
Evaluate m – n when m = –1.5 and n = –7.7. A. –9.2 B. –6.2 C. 6.2 D. 9.2
anonymous
  • anonymous
A?
texaschic101
  • texaschic101
ok...after subbing your problem becomes : -1.5 - (-7.7).....little different here...we have to distribute the negative through the parenthesis changing the problem to : -1.5 + 7.7.....so the signs are different. So you subtract (7.7 - 1.5) and use the sign of the bigger number.
anonymous
  • anonymous
C the bigger number is positive
anonymous
  • anonymous
i might have done something wrong
texaschic101
  • texaschic101
correct :)
texaschic101
  • texaschic101
because the -7.7 became + 7.7 making the sign positive
anonymous
  • anonymous
yay i got a 100 and now i under stand this =)
texaschic101
  • texaschic101
good to hear....but like I said, these rules are different from the rules that apply to multiplying/dividing with signs. Try not to get them mixed up
anonymous
  • anonymous
ok :)
anonymous
  • anonymous
you are the best :)
anonymous
  • anonymous
see ya thanks
texaschic101
  • texaschic101
lol....I don't know about that...but thank you :)

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