Arithmetic Means

Insert three arithmetic means between 12 and 44. Note: put commas in-between numbers. example (1,2,3) DO NOT add spaces

Insert four arithmetic means between -5 and 20.

Note: put commas in-between numbers. example (1,2,3,4) DO NOT add spaces

Insert five arithmetic means between -2 and 16. Note: put commas in-between numbers. example (1,2,3,4,5) DO NOT add spaces

Insert six arithmetic means between -35 and 7. Note: put commas in-between numbers. example (-1,-2,-3,-4,-5,-6) DO NOT add spaces.

Find the missing term in the arithmetic sequence 3, ___, 9.

• 4

• 6

• 5

• 7

Answer explanation

In an arithmetic sequence, the difference between consecutive terms is constant. The difference between 3 and 9 is 6, so the middle term must be 3 + 3 = 6. Thus, the missing term is 6.

Insert [1] arithmetic mean between 9 and - 3.

• 3

• - 3

• 6

• - 6

Answer explanation

To find the arithmetic mean of 9 and -3, add them together (9 + -3 = 6) and divide by 2. Thus, 6 / 2 = 3. Therefore, the correct answer is 3.

Insert [1] arithmetic mean between 6.5 and 17.9

• 9.2

• 10.2

• 11.2

• 12.2

Answer explanation

To find the arithmetic mean between 6.5 and 17.9, add the two numbers and divide by 2: (6.5 + 17.9) / 2 = 12.2. Thus, the correct answer is 12.2.

What is the arithmetic mean between x and x + 12 ?

• x + 2

• x + 3

• x + 4

• x + 6

Answer explanation

The arithmetic mean of x and x + 12 is calculated as (x + (x + 12)) / 2 = (2x + 12) / 2 = x + 6. Thus, the correct answer is x + 6.