Respuesta :

Answer:

6.4

Step-by-step explanation:

Find measurement of leg using pythagorean theorem  

b^2 = c^2- a^2

b^2= 13^2 - 4^2

b^2= 169-16

b^2= 153

b= 12.4

t+6= 12.4

subtract 6 from both sides

t= 6.4

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