The answer to your question is B
X= 31 because all the angles in a triangle equal 180 and 58+91 is 149, 180-149=31
Answer:
A. triangle 4 and triangle 3.
Step-by-step explanation:
If you look at triangle 4, you can see that it need to be rotated and reflected.
If you look at triangle 3, you can see that it needs to be reflected.
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the sum of their squares is 110, So 
the sum of their cubes is 684, so 
the product of the three integers is 210, so xyz= 210
the sum of any two products (xy+yz+zx) is 107
Now we plug in all the values in the identity

684 - 3(210) = (x+y+z)(110-107)
684 - 630 = (x+y+z)(3)
54 = 3(x+y+z)
Divide by 3 on both sides
18 = x+y+z
the value of the sum of three integers is 18