Question

Can someone please answer. There is a picture. It is only one question. Thank you so much!

Answer 1

We can check each of these using the Pythagorean Theorem, $a^2 + b^2 = c^2$
Option A: 
$.5^2 + 1.2^2 = 1.3^2$
.25 + 1.44 = 1.691.69 = 1.69
This option works
Option B
$1^2 + 2^2 = 3^2$
1 + 4 = 9
5 ≠ 9
This option does not work, but let's check the others to make sure
Option C:
$6^2 + 8^2 = 10^2$
36 + 64 = 100
100 = 100
This option works
Option D:
$3^2 + 4^2 = 5^2$
9 + 16 = 25
25 = 25
This option works

So, after doing the calculations, we see that option B does not work