How many different ways can 9 books be arranged on a bookshelf?

Pick the description of a geometric object that best matches the real world object box for a deck of card

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

What are the steps to solving the inequality 3b + 8 ≥ 14?