Answer:
20,000
Step-by-step explanation:
7x+20 = 5x+100
2x = 80
x=40
5(40)+100=20,000
There are about 139 trees in each row.
418/3=
139.333333333~ 139
Answer:

Step-by-step explanation:





Answer: Length = 28 feet and width = 9 feet
Step-by-step explanation:
Let x = width of the wall.
Then, Length of the wall = 10+2x
Since , Area of rectangle = length x width
Then, as per given,

Since width cannot be negative , so x = 9
So width = 9 feet and length = 10+2(9)=10+18 = 28 feet
Hence, length is 28 feet and width is 9 feet of the wall of the barn.
(16*0) + (4*1)
16*10 = 160
4*1 = 4
160 + 4
The answer is 164! :)