Okay so I have a situation So let’s say you are friends with someone but let’s say they say they are going to be by your side, but then they never check up on you or they are just very dry and it seems like they never want to talk to you but when you ask them what’s up, they say that you are perfect friend and that they are glad being friends but they just say stuff but don’t ever show you. I give them a lot but I hardly any back.
are they fake or are they are real?

They are totally fake as heck

They might just act this way to everyone. Maybe they don’t really want to be friends anymore but don’t want to hurt your feelings. They might just be going though things as well and are a very busy person. You can only truly know if you have this conversation with them yourslef.

both equations and proportions are better.

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240