Respuesta :

Answer:

8.6

Step-by-step explanation:

A^2+B^2=C^2

5^2+7^2=C^2

25+49=C^2

74=C^2

√74=C

C=8.6

Pythagorus theorem is a^2 + b^2 =c^2
Which means the two short sides squared added together equals the longest side.
So
5^2 + 7^2 = 25+49
=74
Square root of 74 is 8.6 so x= 8.6

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