Respuesta :

Answer:

Step-by-step explanation:

Substitute 15 in place of all your x and set up the following:

(4*15+4)^2 + (3*15)^2 = c^2

64^2 + 45^2 = c^2

4096 + 2025 = c^2

Answer:

I don't know what nearest tenth of a unit means but answer is 78.23682

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