Answer:
<em>30</em>
Step-by-step explanation:
Keep the 3 as 3. Change the 4 to 0. You now have 30. Since 4 is less than 5, the 3 does not increase by 1 to 4, so the answer is 30.
Answer: There will be 0.04 grams will be left in the sample after 20 years.
Step-by-step explanation:
Since we have given that

Here, Initial amount of radioactive substance = 400 grams
We need to find the amount of substance that will be left in the sample after 20 years.
So, t = 20 years
So, it becomes,

Hence, there will be 0.04 grams will be left in the sample after 20 years.
Answer:
D. 5/3
Step-by-step explanation:
10/6= 1.66666667, which is equivalent to 5/3
Answer:
h≈1.43
Step-by-step explanation:
Simply ,Square the radius, and then divide the radius squared into the tripled volume. For this example, the radius is 2. The square of 2 is 4, and 300 divided by 4 is 75. Divide the amount calculated in Step 2 by pi, which is an unending math constant that begins 3.14, to calculate the cone's height.