Kenniya wrote 0.2( 4 + 1.4m - 2.1). Below was what she did.
1.) 0.2( 4 + 1.4m - 2.1).
2) 4.2...
Mathematics, 19.03.2021 19:50 Valfrutos2912
Kenniya wrote 0.2( 4 + 1.4m - 2.1). Below was what she did.
1.) 0.2( 4 + 1.4m - 2.1).
2) 4.2 + 1.6m- 1.9
3) 4.2 - 1.9 + 1.6m
4) 2.3 + 1.6m
Which explains the first mistake Kenniya did?
O Her first mistake was in (2). She added 0.2 to each term instead of multiplying by 0.2
Her first mistake was in (2). She should have only added 0.2 to 4 instead of adding 0.2 to all 3 terms.
O Her first mistake was in (3), the 1.6m should be negative and 1.9 should be positive.
O Her first mistake was in (3), 1.9 should be the coefficient of m instead of 1.6.
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