The half-life of a radioactive element is five years. a scientist has 18 grams of the element. the equation representing the number of grams, g, after x years is what is the annual rate of decay

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8