Math Problem Statement

If the difference between the consecutive numbers in the sequence below is the same, which two numbers should be placed in the blanks? 19, ___, ___, 37

Solution

To solve this problem, we assume that the difference between consecutive numbers in the sequence is constant. The given sequence is:

19,__,__,3719, \_\_, \_\_, 37

Let the common difference be dd, and let's denote the missing numbers as x1x_1 and x2x_2.

The sequence can be written as: 19,x1,x2,3719, x_1, x_2, 37

Since the difference between consecutive terms is constant, we can write:

x1=19+dx_1 = 19 + d x2=19+2dx_2 = 19 + 2d 37=19+3d37 = 19 + 3d

Now solve for dd:

37=19+3d37 = 19 + 3d 3d=37193d = 37 - 19 3d=183d = 18 d=6d = 6

Now we can find x1x_1 and x2x_2:

x1=19+6=25x_1 = 19 + 6 = 25 x2=19+2(6)=31x_2 = 19 + 2(6) = 31

Thus, the two missing numbers are 25 and 31.

Would you like more details on this or have any other questions?


Here are 5 related questions you could explore:

  1. What if the common difference was negative instead?
  2. How would you find the 6th number in this arithmetic sequence?
  3. Can you find the sum of the first 5 terms of this sequence?
  4. What is the general formula for finding any term in an arithmetic sequence?
  5. How does the concept of a common difference relate to linear equations?

Tip: In an arithmetic sequence, the common difference dd is the same between each consecutive term, making it easy to find missing values by adding or subtracting dd.

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Math Problem Analysis

Mathematical Concepts

Arithmetic Sequence
Common Difference

Formulas

nth term of an arithmetic sequence: a_n = a_1 + (n-1)d

Theorems

Arithmetic Sequence Formula

Suitable Grade Level

Grades 6-8