Answer:
So, the inequality is
![x(125-x)\geq 2500](https://tex.z-dn.net/?f=x%28125-x%29%5Cgeq%202500)
Step-by-step explanation:
Since, the shape of ocean front is rectangular
Let's assume length of rectangle is x feet
width of rectangle us y feet
we are given
An ocean front lot has a perimeter of 250 feet
so, we get
![2x+2y=250](https://tex.z-dn.net/?f=2x%2B2y%3D250)
now, we can solve for y
![x+y=125](https://tex.z-dn.net/?f=x%2By%3D125)
![y=125-x](https://tex.z-dn.net/?f=y%3D125-x)
now, we can find area
![Area=xy](https://tex.z-dn.net/?f=Area%3Dxy)
now, we can plug back y
![Area=x(125-x)](https://tex.z-dn.net/?f=Area%3Dx%28125-x%29)
an area of at least 2500 square feet
so, we get
![x(125-x)\geq 2500](https://tex.z-dn.net/?f=x%28125-x%29%5Cgeq%202500)
Answer:
13a
Step-by-step explanation:
9a + 3a + a = 13a
Answer:
The width of the garden must be 7 feet.
Step-by-step explanation:
Total amount of fencing material = 56 feet, and given that the length of the garden = 21 feet.
Since the fence would be in the shape of a rectangle, then;
perimeter of a rectangle = 2(l + w)
where l is the length and w is the width.
So that, perimeter = 56 feet, l = 21 feet.
Thus,
56 = 2(21 + w)
28 = 21 + w
w = 28 - 21
= 7
The width of the garden must be 7 feet.
Answer:
2,2
Step-by-step explanation:
the lines intercept at 2,2