The figure below shows regular hexagon abcdef inscribed in a circle.

prove that triangle bdf is equilateral using a two-column proof.

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).