80% means 0.80 .
"of" in math almost always means "times".
"80% of 400" means (0.80 x 400). That's 320 .
Answer:
Albert Einstein was a German mathematician and physicist who developed the special and general theories of relativity.
Pythagorean theorem: a² + b² = c²
to find out if these numbers make a triangle, you must put them into the pythagorean theorem
7² + 8² = 15²
49 + 64 =/= 225
so no, these numbers do not make a triangle. hope this helped! ♥