Answer:
x-15
Step-by-step explanation:
5,500 days or what? I don't get it
Answer:
We conclude that the simplified expression is:
![0.10\left(7l\:+\:2s\right)=0.7l+0.2s](https://tex.z-dn.net/?f=0.10%5Cleft%287l%5C%3A%2B%5C%3A2s%5Cright%29%3D0.7l%2B0.2s)
Step-by-step explanation:
Given the expression
![0.10\left(7l\:+\:2s\right)](https://tex.z-dn.net/?f=0.10%5Cleft%287l%5C%3A%2B%5C%3A2s%5Cright%29)
Apply the distributive law: a(b+c) = ab+ac
a = 0.1, b = 7l, c = 2s
![0.10\left(7l\:+\:2s\right)=0.1\cdot \:7l+0.1\cdot \:2s](https://tex.z-dn.net/?f=0.10%5Cleft%287l%5C%3A%2B%5C%3A2s%5Cright%29%3D0.1%5Ccdot%20%5C%3A7l%2B0.1%5Ccdot%20%5C%3A2s)
![=7\cdot \:0.1l+2\cdot \:0.1s](https://tex.z-dn.net/?f=%3D7%5Ccdot%20%5C%3A0.1l%2B2%5Ccdot%20%5C%3A0.1s)
![=0.7l+0.2s](https://tex.z-dn.net/?f=%3D0.7l%2B0.2s)
Therefore, we conclude that the simplified expression is:
![0.10\left(7l\:+\:2s\right)=0.7l+0.2s](https://tex.z-dn.net/?f=0.10%5Cleft%287l%5C%3A%2B%5C%3A2s%5Cright%29%3D0.7l%2B0.2s)
Answer:
10^3 i think
Step-by-step explanation:
Step-by-step explanation:
1 week = 7 days
given 7 days = 14 hours of practice
and let x be the number of hours spent on practicing and y the number of days.
from the above expression we can have the equation,
![y = \frac{x}{2}](https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7Bx%7D%7B2%7D%20)
using the equation when y = 10,
![\frac{x}{2} = 10 \\ x = 2(10) \\ = 20](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%7D%20%20%3D%2010%20%5C%5C%20x%20%3D%202%2810%29%20%5C%5C%20%20%3D%2020)