Algebra 1 : Algebra 1
Study concepts, example questions & explanations for Algebra 1
All Algebra 1 Resources
Example Questions
Example Question #17 : Mean
If the average of 
If the average of 
We also know the average of 
The expression in the numerator represents the sum. By cross-multiplying, we get
Example Question #12 : Basic Statistics
If the average of 
To find the average of all the numbers, we need to find the sums from each average. Since the average of 
The average of 
Then, the total sum is 
So to find average, we do 
Example Question #44 : Statistics And Probability
If the average of 
We know the average of the 
When we cross-multiply, we get 
We know one of the value which is 
So 
Then 
Example Question #1471 : Algebra 1
If the average of 
We know the average of the 
When we cross-multiply, we get 
We know one of the value which is 
So 
Then 
Example Question #46 : Statistics And Probability
If the average of 
If the average of 
We know the sum of two numbers is 
So then we can write 
Then 
Example Question #51 : Statistics And Probability
If the average of 
If the average of 
If the average of the 
This makes the sum of the other two numbers to be 
Then the average of those two numbers is 
Example Question #52 : Statistics And Probability
If the average of 
If the average of 
If the average of the 
This makes the sum of the other three numbers to be 
Example Question #1472 : Algebra 1
What is the average angle of a square?
The total degree of a square is 
Since a square has four angles, we divide 
Example Question #52 : Statistics And Probability
If Joe took three exams and scored 
We need an average of 
That means the sum of his exams must be 
We know the sum of his three exams which is 
The difference is 
Example Question #1473 : Algebra 1
What is the average of the first four prime numbers?
The first four prime numbers are 
The sum is 
Since there are four numbers, the average is 
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