Respuesta :

apologiabiology
x=side legnth of that right triangle

x=hypotonuse
remember
if legs=a and b
and hypotonuse=c (c=x)
c^2=b^2+a^2

a=2
b=4
c=?
2^2+4^2=c^2
4+16=c^2
20=c^2
square root obth sides
4.47
round
x=4.5

answer is B


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