- Can you add multiply and divide in your mind no caculator?

Discover Questions

Find the perimeter of the triangle defined by the coordinates (7, 1), (-6, 1), and (10, 6). (Round to nearest tenth)? What is the smallest of the 3 types of radiation? How long do most birds live? how depends on variety? if a robin, cardinal, etc? Why when copper (II) oxide is mixed with sulfuric acid it changes color from black to blue when heated? Which of the following isotopes is Radioactive? Carbon-12
Carbon-13
Carbon-14?