Question

help algerbra perimiter

Answer 1

how can the top be x-12 if the bottom is x-3?

Answer 2

ohh is it because it woudl be subtracting from a posotive number so it would be lower when x is found ? Actually idk

Answer 3

x-12 is less than x-3.
Let's substitute 100 for x.
100 - 12 = 88
100 - 3 = 97

Answer 4

ohh ok that makes more sense

Answer 5

Can you stil help me

Answer 6

Yeah

Answer 7

I have to write the perimiter as an algerbraic expression

Answer 8

So the area of unknown ? side is pretty simple, it's 12 -1.

Answer 9

Do you understand how the unknown side is 11.

Answer 10

12-1?

Answer 11

No

Answer 12

Oh yes i do

Answer 13

Can i write the algerbraic expression and you tell me if its right

Answer 14

2x-12 is what i got but idk what the other sides are

Answer 15

Ok. 2x is right but I don't believe -12 is right

Answer 16

oh -13

Answer 17

x+x-12-3+12+11+1 oh i must have counted it wrong

Answer 18

2x+9

Answer 19

Yes that's right

Answer 20

but what about the rest of the x-12 on the right side

Answer 21

would that be like x-(8/12) ugh im confused

Answer 22

12 + x - 12 + 1 + 11 + x - 3
= 2x + 12 - 12 + 11 - 3
= 2x + 9

Where does the 8/12 come from?

Answer 23

The perimeter is the sum of all the sides.
The sides are:
12, x - 12, 1, 11, x - 3.

Answer 24

cus u have to do (replace X for 100) (100-12)and since (100-3) is lower then somehow we have to get (100-12) to (x-3) combined

Answer 25

Oh yes my mistake

Answer 26

but idk how to do it or if we even need to find it

Answer 27

That side would be x - 3 - (x - 12)

Answer 28

-15?

Answer 29

Distribute the -1 in front.
x - 3 - (x - 12)
is actually
x - 3 -1(x - 12)
= x - 3 - x + 12
= 9

Answer 30

oh 9?

Answer 31

Yes

Answer 32

So you can just add 9 to what we had
9 + 2x + 9

Answer 33

ohh that makes sense , i dont know how u got that equation though

Answer 34

x - 3 - (x - 12)

Answer 35

oh nevermind i udnerstsand it now! It takes me a while to look at it

Answer 36

Yeah no problem.
It's the same way we found the missing side 11.
12 - 1.

Answer 37

Well thank you anthonyym have a good day

Answer 38

You're welcome