Answer:

Step-by-step explanation:
![x^2 > 100\\\\\mathrm{For\:}u^n\:>\:a\\\mathrm{,\:if\:}n\:\mathrm{is\:even}\mathrm{\:then\:}u\:\:\sqrt[n]{a}\\\\x\sqrt{100}\\\\\sqrt{100}=10\\\\x10](https://tex.z-dn.net/?f=x%5E2%20%3E%20100%5C%5C%5C%5C%5Cmathrm%7BFor%5C%3A%7Du%5En%5C%3A%3E%5C%3Aa%5C%5C%5Cmathrm%7B%2C%5C%3Aif%5C%3A%7Dn%5C%3A%5Cmathrm%7Bis%5C%3Aeven%7D%5Cmathrm%7B%5C%3Athen%5C%3A%7Du%5C%3A%3C%5C%3A-%5Csqrt%5Bn%5D%7Ba%7D%5C%3Aor%5C%3Au%5C%3A%3E%5C%3A%5Csqrt%5Bn%5D%7Ba%7D%5C%5C%5C%5Cx%3C-%5Csqrt%7B100%7D%5Cquad%20%5Cmathrm%7Bor%7D%5Cquad%20%5C%3Ax%3E%5Csqrt%7B100%7D%5C%5C%5C%5C%5Csqrt%7B100%7D%3D10%5C%5C%5C%5Cx%3C-10%5Cquad%20%5Cmathrm%7Bor%7D%5Cquad%20%5C%3Ax%3E10)
Answer: HCA OR ACH
Step-by-step explanation:
This is a right triangle. All side lengths of a right triangle can be found using Pythagorean Theorem.
1. 4^2+8^2=c^2, so this means that c=

80, so your first answer is 8.944.
2. 1600-625=a, so a is the square root of 975, which is 31.22.
3. c^2-a^2=b^2: 122,500-40000, so b^2 is 287.23.
4. 56.25+156.25=c^2, so c is 14.58
5. c^2-b^2=a^2, so a^2 is 67.8
Hope this helped.
No because 180 degrees is a straight line. so that literally is the opposite of an angle