One inch is equivalent to 2.54 centimeters. if they grew .5(12)=6 cm then you would.divide six by 2.54 and get approximately 2.36inches
Answer: 233 min
Step-by-step explanation:
This problem can be solved by the following equation:
(1)
Where:
is the quantity left after time 
is the initial quantity
is the time elapsed
is the constant of decay for the material
So, firstly we need to find the value of
from (1) in order to move to the next part of the problem:
(2)
Applying natural logarithm on both sides of the equation:
(3)
(4)
(5)
(6)
(7) Now that we have the value of
we can solve the other part of this problem: Find the time
for
.
In this case we need to isolate
from (1):
(8)
(9)
Finally:
Answer:
The average yearly change in samanthas height was of 3.3 inches.
Step-by-step explanation:
She mesured 40 1/2 = 40.5 inches.
In 5 1/2 years = 5.5 years, she grew to 57 inches.
During the 5 1/2 years, what was the average yearly change in samanthas height?
The total change was of 57-40.5 = 16.5 inches
16.5/5 = 3.3
The average yearly change in samanthas height was of 3.3 inches.