Question
Each question Sandra answers incorrectly changes her overall score by – 3/4 points. Sandra's
overall score was -4 1/2 points, and then she answered the last question incorrectly. What
was Sandra's final score?
overall score was -4 1/2 points, and then she answered the last question incorrectly. What
was Sandra's final score?
Answers
There are no human answers yet.
Answered by
GPT 3.5
Sandra's initial score was -4 1/2 points. Each question she answers incorrectly changes her score by -3/4 points. If she answered the last question incorrectly, her score would be reduced by -3/4 points.
To find Sandra's final score, we need to subtract -3/4 points from -4 1/2 points:
-4 1/2 points - (-3/4 points)
Since subtracting a negative number is the same as adding a positive number, we can rewrite the subtraction as addition:
-4 1/2 points + 3/4 points
To add these mixed numbers, we need to have the same denominator. We can convert -4 1/2 points to an improper fraction:
-9/2 + 3/4 points
Since the denominators are already the same, we can add the numerators:
-9/2 + 3/4 = -18/4 + 3/4 = -15/4
Therefore, Sandra's final score is -15/4 points.
To find Sandra's final score, we need to subtract -3/4 points from -4 1/2 points:
-4 1/2 points - (-3/4 points)
Since subtracting a negative number is the same as adding a positive number, we can rewrite the subtraction as addition:
-4 1/2 points + 3/4 points
To add these mixed numbers, we need to have the same denominator. We can convert -4 1/2 points to an improper fraction:
-9/2 + 3/4 points
Since the denominators are already the same, we can add the numerators:
-9/2 + 3/4 = -18/4 + 3/4 = -15/4
Therefore, Sandra's final score is -15/4 points.
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