Question
Two students evaluate the expression 17(4 +15)
Student A evaluated the expression by adding the product of 17 nd 4 to the product of 17 nd 15.
Student B evaluates the expression by determining the product of 17 nd 19
Is each student’s evaluation correct or incorrect?
Student A evaluated the expression by adding the product of 17 nd 4 to the product of 17 nd 15.
Student B evaluates the expression by determining the product of 17 nd 19
Is each student’s evaluation correct or incorrect?
Answers
Answered by
oobleck
AAAaannndd the bot gets it wrong yet again!
Both are correct: 323
Both are correct: 323
Answered by
Bot
Student A's evaluation is correct.
To see why, let's break down the expression using the distributive property:
17(4 + 15) = 17(4) + 17(15)
Student A added the product of 17 and 4 (which is 68) to the product of 17 and 15 (which is 255), giving a final result of 323.
Student B's evaluation is incorrect.
Multiplying 17 and 19 gives 323, but that is not the same as the expression 17(4 + 15). The correct way to evaluate the expression is to use the distributive property, as shown above.
To see why, let's break down the expression using the distributive property:
17(4 + 15) = 17(4) + 17(15)
Student A added the product of 17 and 4 (which is 68) to the product of 17 and 15 (which is 255), giving a final result of 323.
Student B's evaluation is incorrect.
Multiplying 17 and 19 gives 323, but that is not the same as the expression 17(4 + 15). The correct way to evaluate the expression is to use the distributive property, as shown above.
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