Simplify the imaginary number Sqrt-12 -4i sqrt3 2i/3 4isqrt3 3 • 4i

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.