= 3/20
Find the greatest common factor (GCF) for each number set. 56,63 1. 1 2. 6 3. 7
1 answer:
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Answer:
The average score for fourth-graders who study the subject about 235 minutes per week is 224.76.
Step-by-step explanation:
Let x be the number of hours fourth-graders study the subject per week and y be the average score on the test. It is given that there is an approximate linear relationship between x and y.
It is given that the average score on a national assessment test for a subject was 194 points for fourth-graders who studied the subject about 45 minutes per week. It means the line passes through (45, 194).
The average score was 211 points for fourth-graders who studied the subject about 150 minutes per week. It means the line passes through (150, 211).
If a line passes through two points then the equation of line is
The equation of required line is
Using distributive property,
Add 194 on both sides.
Substitute x=235 in the above equation.
Therefore the average score for fourth-graders who study the subject about 235 minutes per week is 224.76.