Answer:
1800 bricks
Step-by-step explanation:
Given
Sidewalk = 100ft by 4ft
Brick = 8 inches by 4 inches
Required
Determine the minimum number of bricks
First, we need to determine the area of both;
![Sidewalk = 100ft * 4ft](https://tex.z-dn.net/?f=Sidewalk%20%3D%20100ft%20%2A%204ft)
![Sidewalk = 400ft^2](https://tex.z-dn.net/?f=Sidewalk%20%3D%20400ft%5E2)
![Brick = 8in * 4in](https://tex.z-dn.net/?f=Brick%20%3D%208in%20%2A%204in)
![Brick = 32in^2](https://tex.z-dn.net/?f=Brick%20%3D%2032in%5E2)
Number of bricks is calculated as follows;
![Number = \frac{Sidewalk}{Brick}](https://tex.z-dn.net/?f=Number%20%3D%20%5Cfrac%7BSidewalk%7D%7BBrick%7D)
![Number = \frac{400ft^2}{32in^2}](https://tex.z-dn.net/?f=Number%20%3D%20%5Cfrac%7B400ft%5E2%7D%7B32in%5E2%7D)
Convert ft^2 to in^2
![Number = \frac{400 * 144in^2}{32in^2}](https://tex.z-dn.net/?f=Number%20%3D%20%5Cfrac%7B400%20%2A%20144in%5E2%7D%7B32in%5E2%7D)
![Number = \frac{57600in^2}{32in^2}](https://tex.z-dn.net/?f=Number%20%3D%20%5Cfrac%7B57600in%5E2%7D%7B32in%5E2%7D)
![Number = 1800](https://tex.z-dn.net/?f=Number%20%3D%201800)
In your question you wrote that those who chose pasta were 20 more than chose pasta so I'll assume you meant "than chose hamburgers"... That said, if you let salad = X then ha.burgers = 6x and pasta = 6x + 20
If we add them together we will get the total orders of 280, so our equation is
x + 6x + (6x + 20) = 280
13x + 20 = 280
13x = 260
x = 20
Remember x = salad so 20 people ordered salad
just for your info...
hamburgers would be 6x or 6 × 20 = 120 and
pasta would be 6x + 20 or 6×20 +20 = 140
Answer:
5 is the median mark me as brain list
Answer:
7
Step-by-step explanation:
to edge a lawn =10.he edged 4 lawn =10multiplied by 4=40
2nd. total -40=180-40=140
3rd. when he mows 1 lawn he is paid 20 what about when he is paid 140=140 divided by 20 =7