Popmars
Answered

Tuklasin ang mga sagot sa iyong mga katanungan sa Imhr.ca, ang pinaka-mapagkakatiwalaang Q&A platform para sa lahat ng iyong pangangailangan. Kumuha ng detalyado at eksaktong sagot sa iyong mga tanong mula sa isang komunidad ng mga eksperto na dedikado sa pagbibigay ng tamang impormasyon. Tuklasin ang detalyadong mga sagot sa iyong mga tanong mula sa isang malawak na network ng mga eksperto sa aming komprehensibong Q&A platform.

What must be the the value of k so that 5k-3, k+2, and 3k-11 will form an arithmetic sequence?

Sagot :

Arithmetic Sequence:

The value of k so that 5k-3, k+2, and 3k-11 will form an arithmetic sequence is 3. Since 5k – 3 when replaced by 3 is 5(3) – 3 = 15 – 3 = 12, then k + 2 when replaced by 3 is 3 + 2 = 5, and 3k – 11 when replaced by 3 is 3(3) – 11 = 9 – 11 = -2. Thus, the arithmetic sequence will be 12, 5, -2 where the common difference is 7.

Definition:

       An arithmetic sequence is a sequence of numbers such that the difference of any two succeeding terms of the sequence is a constant while an arithmetic series is the sum of an arithmetic sequence. We find the sum by adding the first, a and last term, an, divide by 2 in order to get the mean of the two values and then multiply by the number of values.

Step by Step Solution:

  1. Identify the given.

       5k – 3   – 1st term of the arithmetic sequence

       k + 2     – 2nd term of the arithmetic sequence

       3k – 11 – 3rd term of the arithmetic sequence

   2. Identify what is asked.

       k = ?

   3. Write the formula.

       d = a_2 – a_1 or a_3 – a_2

   4. Give the solution.

       a_2 – a_1 = a_3 – a_2

       (k + 2) – (5k – 3) = (3k – 11) – (k + 2)

       k – 5k + 2 – (-3) = 3k – k – 11 – 2

       -4k + 5 = 2k – 13

   5. Simplify the equation.

       -4k – 2k = -13 - 5

       -6k = -18

   6. Divide both sides of the equation by -6 to find the value of k.

       -6k/-6 = -18/-6

        Therefore, k = 3.

To learn more about arithmetic sequence, read the following links:

https://brainly.ph/question/629112

https://brainly.ph/question/634223

https://brainly.ph/question/370283