Name: SAT Math Help & School Math Mastery
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#35899

triangle

similarity

geometry

hard

120 sec

Triangle $A BC$ has side lengths $A B = 4$ , $BC = 6$ , and $A C = 8$ . Triangle $D EF$ has side lengths $D E = x$ , $EF = x + 3$ , and $D F = 2 x$ . If triangle $A BC$ is similar to triangle $D EF$ , what is the value of $x$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.