olalateef46 olalateef46
  • 07-09-2020
  • Mathematics
contestada

the fourth term of an AP is 13 and the second term is 3 find the common difference

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Respuesta :

mhanifa
mhanifa mhanifa
  • 07-09-2020

Answer:

5

Step-by-step explanation:

Given

In and AP

  • a4 = 13
  • a2 = 3
  • d = ?

Solution

Formula for the terms of AP:

  • a4 = a + 3d
  • a2 = a + d

The difference of terms:

  • a + 3d - (a - d) = 13 - 3
  • 2d = 10
  • d = 5
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