If a sample of radioactive material has only 12.5% of the original radioactive parent material, how many half-lives have passed? a. 3 b. 5 c. 6.25 d. 12.5

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?

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form