Steps:
57.68÷8
=7.21minutes per hour
(p.s. make sure they don't want you to round!)
There are two prime numbers between 20 and 30: 23 and 29.
To find the percentage each number is of 125, you’d divide the number by 125 and move the decimal in the answer 2 places to the right to turn it to percentage notation (from decimal notation), so you’d solve 23/125 and 29/125.
23/125= .184
Moving the decimal two places to the right makes this 18.4%
29/125= .232
Moving the decimal two places to the right makes this 23.2%
X has two possible values of which you are to pick/use only one: 18.4 and 23.2
Answer:
Step-by-step explanation:
Note that
![x^{3/4 } = \sqrt[4]{x^3}](https://tex.z-dn.net/?f=x%5E%7B3%2F4%20%7D%20%3D%20%5Csqrt%5B4%5D%7Bx%5E3%7D)
![y^{3/8 } = \sqrt[8]{y^3}](https://tex.z-dn.net/?f=y%5E%7B3%2F8%20%7D%20%3D%20%5Csqrt%5B8%5D%7By%5E3%7D)
So,
![\sqrt[4]{x^3} = \sqrt[8]{y^3}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7Bx%5E3%7D%20%3D%20%20%5Csqrt%5B8%5D%7By%5E3%7D)
![( \sqrt[4]{x^3} ) ^8= ( \sqrt[8]{y^3} )^8](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B4%5D%7Bx%5E3%7D%20%29%20%5E8%3D%20%20%28%20%5Csqrt%5B8%5D%7By%5E3%7D%20%29%5E8)
![( \sqrt[4]{x^3} ) ^8= y^3](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B4%5D%7Bx%5E3%7D%20%29%20%5E8%3D%20%20y%5E3)
Once
![( \sqrt[4]{x^3} )^8 = (( \sqrt[4]{x^3} )^4)^2= (x^3)^2 = x^6](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B4%5D%7Bx%5E3%7D%20%29%5E8%20%3D%20%28%28%20%5Csqrt%5B4%5D%7Bx%5E3%7D%20%29%5E4%29%5E2%3D%20%28x%5E3%29%5E2%20%3D%20x%5E6)
![x = \sqrt[6]{y^3}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Csqrt%5B6%5D%7By%5E3%7D)
