Answer: -13
How to: Simplify the expression.
Answer:
Jake has <em>$11.29 </em>dollars left.
Step-by-step explanation:
To find the answer, we will add up<em> $5 + $6.50 + $7.21</em> and we get<em> $18.71</em>. Now <em>subtract $30 from 18.71</em>, which is <em>$11.29</em>. Therefore, <em>Jake has $11.29 dollars left.</em>
To model half-life, use the formula
![A(t)=A_0 (\dfrac{1}{2})^{ \frac{t}{t_{1/2}}](https://tex.z-dn.net/?f=A%28t%29%3DA_0%20%28%5Cdfrac%7B1%7D%7B2%7D%29%5E%7B%20%5Cfrac%7Bt%7D%7Bt_%7B1%2F2%7D%7D%20)
. Here,
![A(t)](https://tex.z-dn.net/?f=A%28t%29)
is the amount remaining after a length of time
![t](https://tex.z-dn.net/?f=t)
.
![A_0](https://tex.z-dn.net/?f=A_0)
is the amount that you start with.
![t_{1/2}](https://tex.z-dn.net/?f=t_%7B1%2F2%7D)
is the half-life. You plug in 50 for
![t_{1/2}](https://tex.z-dn.net/?f=t_%7B1%2F2%7D)
, 10 for
![A_0](https://tex.z-dn.net/?f=A_0)
, and 25 for
![t](https://tex.z-dn.net/?f=t)
. You get
![A(t)=10( \frac{1}{2})^{25/50} = 10( \frac{1}{2})^{1/2} = 7.07 \ grams](https://tex.z-dn.net/?f=A%28t%29%3D10%28%20%5Cfrac%7B1%7D%7B2%7D%29%5E%7B25%2F50%7D%20%3D%2010%28%20%5Cfrac%7B1%7D%7B2%7D%29%5E%7B1%2F2%7D%20%3D%207.07%20%5C%20grams)
.
Answer:
What is the question? Can you show more info or show anything they gave you?
Step-by-step explanation:
Answer: B plz mark me bralny
Step-by-step explanation: