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Anonymous Anonymous
  • 04-04-2015
  • Mathematics
Answered

please help

Evaluate the expression when r = 8.2 and s = –3.7.




r – 2s









A

–22.94







B

0.8







C

4.5







D

15.6

Verified Answer :

mathgirl22
mathgirl22 mathgirl22
  • 04-04-2015

Substitute. 
r – 2s ⇒ 8.2- 2* -3.7
\(8.2-2*-3.7 \\ use -pemdas \\ 8.2-(-7.4) \\ 15.6 \\ Answer- D.15.6\)

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