alondrx1 alondrx1
  • 25-01-2017
  • Mathematics
contestada

#5 on how to start it

5 on how to start it class=

Respuesta :

helpmetnx helpmetnx
  • 25-01-2017
So we have the numbers of one triangle and one number from another triangle
(congruent triangles have congruent corresponding sides)
do cross multiplication
Altitude over altitude = side over side

SH/FJ = ST/FG
to substitute
5/7 = 6/x
cross multiplication 
 (5) (x) = (7)(6)
5x = 42
divide both sides by 5 to isolate the x
x = 8.4

That means that side FG is 8.4

Hope this helps ;)
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