Answer: 
<u>Step-by-step explanation:</u>
![12cos\bigg(\dfrac{2\pi}{5}x\bigg)+10=16\\\\\\12cos\bigg(\dfrac{2\pi}{5}x\bigg)=6\\\\\\cos\bigg(\dfrac{2\pi}{5}x\bigg)=\dfrac{1}{2}\\\\\\cos^{-1}\bigg[cos\bigg(\dfrac{2\pi}{5}x\bigg)\bigg]=cos^{-1}\bigg(\dfrac{1}{2}\bigg)](https://tex.z-dn.net/?f=12cos%5Cbigg%28%5Cdfrac%7B2%5Cpi%7D%7B5%7Dx%5Cbigg%29%2B10%3D16%5C%5C%5C%5C%5C%5C12cos%5Cbigg%28%5Cdfrac%7B2%5Cpi%7D%7B5%7Dx%5Cbigg%29%3D6%5C%5C%5C%5C%5C%5Ccos%5Cbigg%28%5Cdfrac%7B2%5Cpi%7D%7B5%7Dx%5Cbigg%29%3D%5Cdfrac%7B1%7D%7B2%7D%5C%5C%5C%5C%5C%5Ccos%5E%7B-1%7D%5Cbigg%5Bcos%5Cbigg%28%5Cdfrac%7B2%5Cpi%7D%7B5%7Dx%5Cbigg%29%5Cbigg%5D%3Dcos%5E%7B-1%7D%5Cbigg%28%5Cdfrac%7B1%7D%7B2%7D%5Cbigg%29)

No the line is going side ways, it has to be up and down! or straight across!
Answer:
9
Step-by-step explanation:
9×n/5=9
n=5
5/5=1
9/1=9
Step-by-step explanation:
A.
![{8}^{ \frac{1}{3} } = \sqrt[3]{8} = 2](https://tex.z-dn.net/?f=%20%7B8%7D%5E%7B%20%5Cfrac%7B1%7D%7B3%7D%20%7D%20%20%3D%20%20%5Csqrt%5B3%5D%7B8%7D%20%20%3D%202)
B.
![{8}^{ \frac{2}{3} } = { (\sqrt[3]{8}) }^{2} = {2}^{2} = 4](https://tex.z-dn.net/?f=%20%7B8%7D%5E%7B%20%5Cfrac%7B2%7D%7B3%7D%20%7D%20%20%3D%20%20%7B%20%20%28%5Csqrt%5B3%5D%7B8%7D%29%20%7D%5E%7B2%7D%20%20%3D%20%20%7B2%7D%5E%7B2%7D%20%20%3D%204)
C.
![{16}^{ \frac{3}{4} } = { (\sqrt[4]{16} )}^{3} = {2}^{3} = 8](https://tex.z-dn.net/?f=%20%7B16%7D%5E%7B%20%5Cfrac%7B3%7D%7B4%7D%20%7D%20%20%3D%20%20%7B%20%28%5Csqrt%5B4%5D%7B16%7D%20%29%7D%5E%7B3%7D%20%20%3D%20%20%7B2%7D%5E%7B3%7D%20%20%3D%208)
Answer:
0.60 more
Step-by-step explanation:
Sandwich: 1.25
Milkshake: 0.65
We need to find the difference between the 2
1.25 - 0.65 = 0.6
A sandwich costs 60 cents MORE than a milkshake