3x-195>=5x-21
Add 21 to both sides
3x-174>5x
Sub 3x from both sides
-174>2x
Divide both sides by 2
-87>x
Answer:
F(x) = 1/x^2
Step-by-step explanation:
F(x) = 1/x^2 is
y = 1/x^2
graph goes up to 10 each side
plug in 1,2,3,4,5,6,7,8,9,10 for x and see what y looks like
when x is 1,2,3,4,5,6,7,8,9,10
y is 1,1/4,1/9,etc
Answer:
![Width = 5x + 1](https://tex.z-dn.net/?f=Width%20%3D%205x%20%2B%201)
Step-by-step explanation:
Given
![Area = 10x^2 + 5x](https://tex.z-dn.net/?f=Area%20%3D%2010x%5E2%20%2B%205x)
![Length = 5x](https://tex.z-dn.net/?f=Length%20%3D%205x)
Required (Missing)
Determine the Width?
Area is calculated as:
![Area = Length * Width](https://tex.z-dn.net/?f=Area%20%3D%20Length%20%2A%20Width)
Substitute values for Area and Length
![10x^2 + 5x = 5x * Width](https://tex.z-dn.net/?f=10x%5E2%20%2B%205x%20%3D%205x%20%2A%20Width)
Factorize the right hand side
![5x(5x + 1) = 5x * Width](https://tex.z-dn.net/?f=5x%285x%20%2B%201%29%20%3D%205x%20%2A%20Width)
Divide both sides by 5x
![5x + 1 = Width](https://tex.z-dn.net/?f=5x%20%2B%201%20%3D%20Width)
<em>Hence, the width of the model is 5x + 1</em>
Answer:
D
Step-by-step explanation:
plug in (3,2) to see if it's a solution:
A) does -3(3) + 2 equal -7? yes
B) since 'A' is a solution then 'B' cannot be the answer
C) since (3,2) is a solution then 'C' cannot be the answer
plug in (2,-1) to see if it's a solution:
plug in (2,-1) to see if it's a solution:
-3(2) - (-1) equal -7? no, it equals -5
only (3,2) is a solution so the answer is D