I would really appreciate it if someone could answer this I will give a brainlist:)

Answer:
Step-by-step explanation:
c=a2+b2−−−−−−√
a=182+152−−−−−−−−√
c=324+225−−−−−−−−√
c=549−−−√
c=23.4307
Answer:
x = 17
Step-by-step explanation:
Formula:
a² + b² = c²
8² + 15² = c²
64 + 225 = c²
c² = 289
[tex]\sqrt{c^2} =\sqrt{289}[/tex]
c = 17