chocolatemami
chocolatemami chocolatemami
  • 11-12-2019
  • Mathematics
contestada

What is the value of x ??

What is the value of x class=

Respuesta :

josshyaby
josshyaby josshyaby
  • 12-12-2019

Answer:

4.2mm

Step-by-step explanation:

This are two similar triangles.

Comparing the two:

8/3 = (7+x)/x

Cross multiplying

8x = 3 (7+x)

8x = 21 + 3x

8x - 3x = 21

5x = 21

Dividing by 5

X = 21/5

X = 4.2mm

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