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anonymous
 one year ago
Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning. Write feedback to Arlene explaining the mistake she made and how to correct her work.
Step Work Reasoning
−7.9 + 8.2 − 3.4 + 2.1 Original problem
1 −7.9 + 8.2 + (−3.4) + 2.1 Additive inverse
2 −7.9 + (−3.4) + 8.2 + 2.1 Associative property
3 (−7.9 + (−3.4)) + (8.2 + 2.1) Commutative property
4 −11.3 + 10.3 Simplify
5 −1 Simplify
anonymous
 one year ago
Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning. Write feedback to Arlene explaining the mistake she made and how to correct her work. Step Work Reasoning −7.9 + 8.2 − 3.4 + 2.1 Original problem 1 −7.9 + 8.2 + (−3.4) + 2.1 Additive inverse 2 −7.9 + (−3.4) + 8.2 + 2.1 Associative property 3 (−7.9 + (−3.4)) + (8.2 + 2.1) Commutative property 4 −11.3 + 10.3 Simplify 5 −1 Simplify

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Keep doing each step manually, and see where it slips up: −7.9+8.2−3.4+2.1=−1 −7.9+8.2+(−3.4)+2.1=−1 −7.9+(−3.4)+8.2+2.1=−1 (−7.9+(−3.4))+(8.2+2.1)=−1 −11.3+10.3=−1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So if you haven't noticed there are no errors

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok but what about for Write feedback to Arlene explaining the mistake she made and how to correct her work.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Try answering the question and see where an error shows up, like @ChrystalC said :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0she said there are no errors @RainbowBrony555

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@UnkleRhaukus can you help?

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.0i don't see any errors

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Theres no errors, @KAKES1967

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so how would i go about this part though > Write feedback to Arlene explaining the mistake she made and how to correct her work. i would do nothing right?

OregonDuck
 one year ago
Best ResponseYou've already chosen the best response.0Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning. Write feedback to Arlene explaining the mistake she made and how to correct her work. Step Work Reasoning −7.9 + 8.2 − 3.4 + 2.1 Original problem 1 −7.9 + 8.2 + (−3.4) + 2.1 Additive inverse 2 −7.9 + (−3.4) + 8.2 + 2.1 Associative property 3 (−7.9 + (−3.4)) + (8.2 + 2.1) Commutative property 4 −11.3 + 10.3 Simplify 5 −1 Simplify the properties in steps 2 & 3 are misidentified
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