What pair of numbers have a sum of 18 and a difference of 6?

Two numbers are 12 and 6.

How do I find the average of 6 numbers?

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

What is the sum of 18 and the difference of two?

The numbers are 10 and 8. Their sum = 18 and the difference between them = 2. Add (1) and (2): 2a = 20 or a = 10, and so b = 18–10 = 8.

How do you get the average of a set of numbers?

Average This is the arithmetic mean, and is calculated by adding a group of numbers and then dividing by the count of those numbers. For example, the average of 2, 3, 3, 5, 7, and 10 is 30 divided by 6, which is 5.

How do you average 10 numbers?

Finding the average or the mean is a very straightforward concept. If you have a set of numbers, the average is found by adding all numbers in the set and dividing their sum by the total number of numbers added in the set. 50 divided by 5 is 10, so 10 is the average or mean.

What is average set?

Explanation: To find the average of a set of numbers you first add all the numbers up in the set and then divide by the total amount of numbers.

What is the average of a set of numbers?

Average of a set of numbers = 5 + 6 + 9 + 11 + 13 + 12 / 6 Average of a set of numbers = 9.333 An online average value calculator allows you to calculate the mean/average/expected value/center value of the sample or population data set.

What is the average of the sum of 18 and 6?

The average is defined as the sum of all numbers in the set divided by the count of numbers in the set. Thus, if we know the sum is 18 and the average is 6, we can plug these into the average equation and solve for the count of numbers in the set. Ie, 18/n = 6. Solve for n=3.

How do you find the average in math?

Finding the average is a very straightforward concept. If you have a set of numbers, the average is found by adding all numbers in the set and dividing their sum by the total number of numbers added in the set.

How do you find the mean of Sum Sum?

Sum = 5+10+20+5+10 = 50 Divide the 50 by 5 (the total number of numbers added) 50 divided by 5 is 10, so 10 is the average or mean. Finding the average when the numbers in the set are the same.