A seafood restaurant claims an increase of $1750.78 over its average profit during a week where it introduced a special of baked
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<span>denominator is </span>number below the line in a common fraction.
Here's picture to show what is a denominator:
Here's picture to show what is a denominator:
Answer:
The mean score for all students on the quiz was 86.
Step-by-step explanation:
This question is solved by a weighed average.
To find the weighed average, we add the values multiplied by their weight, and after that we divide by the sum of weights.
In this problem, we have that:
Mr. Spears had 20 students in his class with a mean score of 80.
So 80 has a weight of 20.
Mrs. Guyton's class of 30 students had a mean score of 90.
So 90 has a weight of 30.
Overall, what was the mean score for all students on the quiz
The mean score for all students on the quiz was 86.