Respuesta :

altavistard

Answer:

n = 14

Step-by-step explanation:                                                    28           n

the two blue triangles are similar.  28 is to n as n is to 7:  -------- = ------

                                                                                                   n           7

Then, after cross-multiplying, we have n^2 = 7(28) = 196

Taking the square root of both sides yields

n = 14

Answer:

n=14

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