How can you use mental math to determine that 2800 divide equals 400

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20