Answer:
A
Step-by-step explanation:
We have the expression
We want to find the value when k is -3. So, substitute -3 for k and evaluate:
Multiply:
Subtract:
Add:
Therefore, our answer is A.
Clark made 14 and Shelly made 19.
33-5=28
28/2=14
Clark=14
14+5=19
Shelby=19
Answer:
464 grams.
Step-by-step explanation:
Amount of substance:
The amount of substance after t years is given by an equation in the following format:
In which A(0) is the initial amount and r is the decay rate, as a decimal.
Co-60 has a half life of 5.3 years.
This means that:
We use this to find r. So
So
If a pellet that has been in storage for 26.5 years contains 14.5g of Co-60, how much of this radioisotope was present when the pellet was put in storage?
We have that , and use this to find A(0). So
[tex]A(0) = 464[tex]
464 grams.
Number of red marbles/total number of marbles
35/(35+8+7)
35/50
7/10
The probability is 7/10
Answer:
$28.75
Step-by-step explanation:
15% of 25 is $3.75 and that + the 25 that is already there is $28.75