kalaniitaylor kalaniitaylor
  • 26-02-2021
  • Mathematics
contestada

If 3(d+1)=4(d–2),
then what is the value of 5(d–2)?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 27-02-2021

9514 1404 393

Answer:

  45

Step-by-step explanation:

Solving for d, we find ...

  3(d +1) = 4(d -2)

  3d +3 = 4d -8 . . . . . . eliminate parentheses

  11 = d  . . . . . . . . . . . .  subtract 3d-8

Then the value of 5(d-2) is ...

  5(11 -2) = 5(9) = 45

_____

The graphical solution gives both the value of "d" and the value of 4(d-2). To get 5(d-2), we only need to add d-2 to the value of 4(d-2).

  5(d-2) = (11 -2) +36 = 45

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