With this problem you will need to use the order of operations, or PEMDAS.
P= parentheses
E= Exponents
M= Multiplication
D= Division
A= Addition
S= Subtraction
There is no parentheses or exponents, so mark those out.
I am not so great with working things out like this problem, but i am sure that the person above/below did work it out correctly.
I can give you the answer though.
Answer= 25
Sorry if that answer is incorrect
Hoped this helped.... Sorta,
-Anime
Answer:
![A = 4x^2 + 86x + 450](https://tex.z-dn.net/?f=A%20%3D%204x%5E2%20%2B%2086x%20%2B%20450)
Step-by-step explanation:
Given
![Walkway = x](https://tex.z-dn.net/?f=Walkway%20%3D%20x)
![Length = 18](https://tex.z-dn.net/?f=Length%20%3D%2018)
![Width = 25](https://tex.z-dn.net/?f=Width%20%3D%2025)
Required:
The area of the swimming pool
Assume the walkway will be on the 4 sides of the swimming pool.
The total length (L) of the swimming pool will be:
![L = 18 + x + x](https://tex.z-dn.net/?f=L%20%3D%2018%20%2B%20x%20%2B%20x)
![L = 18 + 2x](https://tex.z-dn.net/?f=L%20%3D%2018%20%2B%202x)
The total width (W) will be:
![W = 25 + x + x](https://tex.z-dn.net/?f=W%20%3D%2025%20%2B%20x%20%2B%20x)
![W = 25 + 2x](https://tex.z-dn.net/?f=W%20%3D%2025%20%2B%202x)
The area (A) is:
![A = L * W](https://tex.z-dn.net/?f=A%20%3D%20L%20%2A%20W)
![A = (18 + 2x) * (25 + 2x)](https://tex.z-dn.net/?f=A%20%3D%20%2818%20%2B%202x%29%20%2A%20%2825%20%2B%202x%29)
Expand bracket
![A = 18 * 25 + 18 * 2x + 25 * 2x + 2x * 2x](https://tex.z-dn.net/?f=A%20%3D%2018%20%2A%2025%20%2B%2018%20%2A%202x%20%2B%2025%20%2A%202x%20%2B%202x%20%2A%202x)
![A = 450 + 36x + 50x + 4x^2](https://tex.z-dn.net/?f=A%20%3D%20450%20%2B%2036x%20%2B%2050x%20%2B%204x%5E2)
![A = 450 + 86x + 4x^2](https://tex.z-dn.net/?f=A%20%3D%20450%20%2B%2086x%20%2B%204x%5E2)
Reorder
![A = 4x^2 + 86x + 450](https://tex.z-dn.net/?f=A%20%3D%204x%5E2%20%2B%2086x%20%2B%20450)
Add everything to find out the total 615+255+150 (4) for four hours of band
615+255+ 600= 1470 there are 6 people so divide 1470 by 6
They each pitched in 245
Answer:
-b/2a is the equation to find the x coordinate of the vertex point and it's y, when x is plugged into the quadratic equation.
Step-by-step explanation:
Answer:
3.75 minutes
Step-by-step explanation:
Set up an equation where x is the number of minutes:
0.25x + 35 = 0.5x + 20
Solve for x:
0.25x + 35 = 0.5x + 20
35 = 0.25x + 20
15 = 0.25x
3.75 = x
So, both plans will cost the same with 3.75 minutes