Given:
The initial mass of an element is 800 grams.
Decay rate = 8.2% per day
Number of days = 15
To find:
The remaining element after 15 days.
Solution:
The exponential decay model is
Where, a is the initial value r is the rate of interest and t is time period.
Putting 
in the above formula, we get
Therefore, the mass of the remaining element is 221.7 grams.
Answer:
15
Step-by-step explanation:
(3/5)*25=15
Answer: 8/9 cups
Step-by-step explanation:
The word 'of' means 'times' as far as fractions are concerned. In this case, we have 1/3 of 2 1/3.
First, it is a good idea to make 2 1/3 an improper fraction - as 8/3, so now we have:
1/3 of 8/3, but since 'of' means 'times' we have,
1/3 x 8/3 = 8/9
The answer is 8/9 cups.
The volume of a sphere is found with the following formula:
The radius is raised to a power of 3. Since the radius is 2 <em>meters</em>, this means that the volume would be measured in
cubic meters.
Answer:
0 (zero)
Step-by-step explanation:
Plug in the variable for -4 and solve
y= 2(-4)2-4(-4)
y= -8(2)-4(-4)
y=-16+16
y=0
