chriskkallas chriskkallas
  • 04-09-2020
  • Mathematics
contestada

I am somewhat confused on how to do this, can someone explain? thanks!

I am somewhat confused on how to do this can someone explain thanks class=

Respuesta :

Travisthanh
Travisthanh Travisthanh
  • 04-09-2020

Answer:

(3x-1)×2=12-x

Step-by-step explanation:

Answer Link
kbh20 kbh20
  • 04-09-2020
AC = 3x - 1
AD = 12 - x
AD = AC + CD
After putting the values given above,
12 - x = 3x - 1 + CD
12 - x - 3x + 1 = CD
13 - 4x = CD

If C is the midpoint of AD then
AC = CD
3x - 1 = -4x + 13
3x + 4x = 13 + 1
7x = 14
X = 14 / 7
X = 2

CD = - 4x + 13
CD = - 4(2) + 13
CD = - 8 + 13
CD = 5
Answer Link

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