B=63
You divide 1134/18
I think.......
Explanation:
The formula for getting the ROI or Return of Investment is:
![ROI=\frac{finalvalue-initialvalue}{initial\text{ value}}\times100](https://tex.z-dn.net/?f=ROI%3D%5Cfrac%7Bfinalvalue-initialvalue%7D%7Binitial%5Ctext%7B%20value%7D%7D%5Ctimes100)
In the problem, the initial value is $15,500 while the final value is $12,500.
Plugging these data into the formula above, we get:
![TotalReturn=\frac{12,500-15,500}{15,500}\times100](https://tex.z-dn.net/?f=TotalReturn%3D%5Cfrac%7B12%2C500-15%2C500%7D%7B15%2C500%7D%5Ctimes100)
Then, simplify.
![\begin{gathered} TotalReturn=\frac{-3,000}{15,500}\times100 \\ TotalReturn=-0.193548\times100 \\ TotalReturn=-19.3548 \\ TotalReturn\approx-19.4\% \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20TotalReturn%3D%5Cfrac%7B-3%2C000%7D%7B15%2C500%7D%5Ctimes100%20%5C%5C%20TotalReturn%3D-0.193548%5Ctimes100%20%5C%5C%20TotalReturn%3D-19.3548%20%5C%5C%20TotalReturn%5Capprox-19.4%5C%25%20%5Cend%7Bgathered%7D)
Answer:
The total return on Jill's investment is -19.4%.
I just finished talking about ratios a few days ago at school, the answer is 4 cups of pretzels : 2 cups of bread chips
Isolate z by itself:
![\frac{z}{z^4}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bz%7D%7Bz%5E4%7D%20)
To simplify variables with powers, subtract the smaller power from the bigger power:
![4 - 1 = 3](https://tex.z-dn.net/?f=4%20-%201%20%3D%203)
![\frac{z}{z^4} = \frac{1}{z^3} = z^{-3}](https://tex.z-dn.net/?f=%5Cfrac%7Bz%7D%7Bz%5E4%7D%20%3D%20%5Cfrac%7B1%7D%7Bz%5E3%7D%20%3D%20z%5E%7B-3%7D)
The exponent will be
-3.
There is no formula for finding prime numbers. The rule is just if a number is prime then it is divisible by 1 and itself