Mathematics, 05.10.2020 17:01, ineedhelp2285
Sarah used properties of operations to write the following three equivalent expressions to 1l-4+8+(-6)].
Expression 1: 3 (-4)+ +2(-6)
Expression 2: 1[(-4+(-6)]+4
Expression 3: -2+4+3
Which of the expressions is not equivalent and what was Sarah's error?
Answers: 2
Mathematics, 21.06.2019 20:20, Kelbee781
Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?
Answers: 1
Sarah used properties of operations to write the following three equivalent expressions to 1l-4+8+(-...
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