How do you write the proportion 9: 36 = 10: 40 using words ?

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

What term best describes a line ans a point that lie in the same plane

Need on this one asap im almost done with this subject