3x+12=2x+40 solve for x
2 answers:
You might be interested in
The dot plots is an illustration of charts and graphs
The average score of period 7 is greater than the average score of period 1
<h3>How to determine the period with the higher average?</h3>From the dot plots in the complete question, we have the following frequency tables
<u>Period 1</u> <u>Period 7</u>
Score Students Score Students
55 1 65 1
70 1 75 3
75 6 80 5
80 6 85 6
85 2 90 3
90 3 95 2
95 1
The average is calculated using:
For period 1, we have:
Evaluate the sum
Evaluate the quotient
For period 7, we have:
Evaluate the sum
Evaluate the quotient
By comparison, 83 is greater than 79.5
Hence, the average score of period 7 is greater than the average score of period 1
Read more about dot plots at: