144
-(4x-3)^2
-(-12)^2
12^2 =12x12=144
Answer:
11x11=121
Step-by-step explanation:
121 is equal to 11 times 11.
Data Input
Simone paid $13 for an initial year's
The renewal rate is $8 per year
Equation
y = 8x + 13
Table
x (number of years renewed) | (total cost in dollars)
0 -> 13 dollars
1 -> 21 dollars
2 -> 29 dollars
3 -> 37 dollars
4 -> 45 dollars
Answer:
3.21 grams
Step-by-step explanation:
First we are finding the radioactive decay constant using the formula:
lambda = 
where
lambda is the radioactive decay constant.
is the half life of the radioactive substance.
We know from our problem that Rutherfordium- 265 has a half-life of 13 hours, so let's replace the value in our formula.
lambda = 
lambda = 0.0533 per hour
Now we can use the decay formula to find the remaining quantity of the substance:

where
is the ending amount
is the beginning amount
is the time (in hours)
We know from our problem that there is a 149g sample of Rutherfordium- 265 left at 12am on October 19th, so
. Notice that there are exactly 3 days from 12 am October 19th to 12 am October 22nd, so we have
; therefore
. Now we can replace all the values in our formula:


We can conclude that 3.21 grams of Rutherfordium- 265 would remain on October 22nd at 12 am.
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