Answer:
17 is the answer
Step-by-step explanation:
Answer:
-18X^5
Step-by-step explanation:
![P(7,3)=\dfrac{7!}{3!}=7\times6\times5\times4=840](https://tex.z-dn.net/?f=P%287%2C3%29%3D%5Cdfrac%7B7%21%7D%7B3%21%7D%3D7%5Ctimes6%5Ctimes5%5Ctimes4%3D840)
which means none of the above are correct, unless you have a different definition of
![P(a,b)](https://tex.z-dn.net/?f=P%28a%2Cb%29)
.
Answer:
<h2>
7.2</h2>
option B is the right option.
Step-by-step explanation:
<h3>
Using leg rule</h3>
![\frac{bc}{ab} = \frac{ab}{bd}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bbc%7D%7Bab%7D%20%20%3D%20%20%5Cfrac%7Bab%7D%7Bbd%7D%20)
Plug the values:
![\frac{20}{12} = \frac{12}{x}](https://tex.z-dn.net/?f=%20%5Cfrac%7B20%7D%7B12%7D%20%20%3D%20%20%5Cfrac%7B12%7D%7Bx%7D%20)
Apply cross product property
![20 \times x = 12 \times 12](https://tex.z-dn.net/?f=20%20%5Ctimes%20x%20%3D%2012%20%5Ctimes%2012)
Calculate the product
![20x = 144](https://tex.z-dn.net/?f=20x%20%3D%20144)
divide both sides of the equation by 20
![\frac{20x}{20} = \frac{144}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B20x%7D%7B20%7D%20%20%3D%20%20%5Cfrac%7B144%7D%7B20%7D%20)
Calculate:
![x = 7.2](https://tex.z-dn.net/?f=x%20%3D%207.2)
hope this helps..
Good luck...