Answer:
10.5
Step-by-step explanation:
225÷21.50
=10.46511
=10.5(3sf)
Answer:
Step-by-step explanation:
she runs the air during the 4 hottest months.....30 days per month....so she runs the air for (30 * 4) = 120 days
she runs it for 7 hrs per day....so she runs it (7 * 120) = 840 hrs
at a cost of 0.25 per hr....(840 * 0.25) = $ 210 <==
Answers: ![x](https://tex.z-dn.net/?f=x%3C-8)
1. Switch sides
![-9x+8>80](https://tex.z-dn.net/?f=-9x%2B8%3E80)
2. Subtract by 8 from both sides of equation.
![-9x+8-8>80-8](https://tex.z-dn.net/?f=-9x%2B8-8%3E80-8)
3. Simplify.
![-9x>72](https://tex.z-dn.net/?f=-9x%3E72)
4. Multiply by -1 from both sides of equation. (it's should be the reverse inequality).
![(-9x)(-1)](https://tex.z-dn.net/?f=%28-9x%29%28-1%29%3C72%28-1%29)
5. Simplify.
![9x](https://tex.z-dn.net/?f=9x%3C-72)
6. Then you had to divide by 9 from both sides of equation.
![\frac{9x}{9}< \frac{-72}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B9x%7D%7B9%7D%3C%20%5Cfrac%7B-72%7D%7B9%7D)
7. Simplify.
![\frac{9x}{9}=x](https://tex.z-dn.net/?f=%5Cfrac%7B9x%7D%7B9%7D%3Dx)
8. Divide by the numbers.
![\frac{9}{9}=1](https://tex.z-dn.net/?f=%5Cfrac%7B9%7D%7B9%7D%3D1)
![=x](https://tex.z-dn.net/?f=%3Dx)
![\frac{-72}{9}=-8](https://tex.z-dn.net/?f=%5Cfrac%7B-72%7D%7B9%7D%3D-8)
9. Divide by the numbers.
![\frac{72}{9}=8](https://tex.z-dn.net/?f=%5Cfrac%7B72%7D%7B9%7D%3D8)
![=-8](https://tex.z-dn.net/?f=%3D-8)
![x](https://tex.z-dn.net/?f=x%3C-8)
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Answer:
25
Step-by-step explanation:
divide mia's buttons by mila's
225 / 9
=25
Here is a hint: 10 * 32 = 320 oz. Convert 320 oz into pounds. :)