Answer:
It seems there's more information in you question that you haven't posted.
7 months = 7 * (365/12) = 213 days
The half-life of chromium 51 is 27.7 days.
After 7 months, chromium 51 will have undergone 7.69 half-lives.
To solve for the ending amount we'll use the formula:
Ending Amount = Beginning Amount / 2^n where 'n' = # of half-lives
We'll say the beginning amount =1
Ending Amount = 1 / 2^7.69
Ending Amount = 0.0048426082
Basicaly if you started with 1 gram of chromium 51, after 7 months you would have 0.0048426082 grams.
Source: https://www.1728.org/halflife.htm
Step-by-step explanation:
Answer:
The straight line distance between the school and the candy store is 5.
Step-by-step explanation:
Use Pythagorean theorem
a²+b²=c²
3²+4²=c²
9+16=c²
25=c²
5=c
Answer:
Step-by-step explanation:
The equation of a circle has the following format:
In which r is the radius and the centre is the point 
In this question:
Center at (3,-2), so 
Radius 11, so 
Then
ANSWER:
STEP-BY-STEP EXPLANATION:
The operation is a multiplication, which is expressed as follows:
