Find how many half lives have passed
seems we are measuring in days
half life formula is as follows
A=final amount
P=initial amount
t=time in a certain units (this time, it's days)
h=time of half life
so
we are given that P=1, A=0.6, t=3
find h
subsitute
take ln of both sides
multiply both sides by h
divide both sides by ln(0.6)
use your calculator
h≈4.07075
so about 4 days is the half life
Answer: 60
Step-by-step explanation: To find 50% of 120, first write 50% as a decimal by moving the decimal point two places to the left to get .50.
Next, the word <em>of</em> means multiply, so we have (.50)(120) which is 60.
This means that 50% of 120 is 60.
The correct answer is 317
The definition of log is by the equivalence:
means
where b>0 and b ≠ 1.
a.
<span> is not a logarithmic function because the base is greater than 0.
False: By definition, the base of a log MUST be greater than zero but cannot equal one.
b. </span>
<span> is not a logarithmic function because the base is a square root.
False: sqrt(3) is a positive number not equal to one, so it is a legitimate base.
c. </span>
<span>is not a logarithmic function because the base is equal to 1.
True. Log cannot have a base of one, by definition.
Recall the definition of log where b^y=x. If b=1, b^y will also equal 1, so cannot equal x which has a domain of 0<x< ∞
d. </span>
is not a logarithmic function because the base is a fraction.
False, because 3/4 is a legitimate base, just like any other positive number other than one.
Answer:
3 bags of footballs. 10 footballs in each bag. 3x10=30. he wants to put those into 4 bags now. 30/4=7.5.
Step-by-step explanation:
answer: 7.
he'd have 2 footballs left over though