So, 0.5^5 is 0.03125
multiply that by 125 and get your answer.
*3.90625* (4)
just saying, I got the 0.5^5 thing because 5 is the number of half-lives (x) and 0.5 is the rate of loss (or whatever its called).
If it were to gain, you would put 1.5
The answers are 1/3, 2/6, 3/9, 4/12
Answer:
40% number of calories have increased
Step-by-step explanation:
Old Value ( Calories consume before) = 2000
New Value (increase in Calories consumed) = 2800
We need to find by what percent did the number of calories increase
To find percent increase, the formula used is:
![Percent\: increase=\frac{New\:Value-Old\:Value}{Old\:Value}\times 100%](https://tex.z-dn.net/?f=Percent%5C%3A%20increase%3D%5Cfrac%7BNew%5C%3AValue-Old%5C%3AValue%7D%7BOld%5C%3AValue%7D%5Ctimes%20100%25)
Putting values in formula and finding percent increase
![Percent\: increase=\frac{New\:Value-Old\:Value}{Old\:Value}\times 100\%\:\\Percent\: increase=\frac{2800-2000}{2000}\times 100\%\: \\Percent\: increase=\frac{800}{2000}\times 100\%\: \\Percent\: increase=0.4\times 100\%\: \\Percent\: increase=40\%](https://tex.z-dn.net/?f=Percent%5C%3A%20increase%3D%5Cfrac%7BNew%5C%3AValue-Old%5C%3AValue%7D%7BOld%5C%3AValue%7D%5Ctimes%20100%5C%25%5C%3A%5C%5CPercent%5C%3A%20increase%3D%5Cfrac%7B2800-2000%7D%7B2000%7D%5Ctimes%20100%5C%25%5C%3A%20%5C%5CPercent%5C%3A%20increase%3D%5Cfrac%7B800%7D%7B2000%7D%5Ctimes%20100%5C%25%5C%3A%20%5C%5CPercent%5C%3A%20increase%3D0.4%5Ctimes%20100%5C%25%5C%3A%20%5C%5CPercent%5C%3A%20increase%3D40%5C%25)
So, 40% number of calories have increased
The difference would be 0.27