25 points! please help please don't answer if you don't know the answer!

22

Step-by-step explanation:

Hi!

So,

x+y=6 => x=6-y

Now you subtitute x with 6-y in the following equation:

2x+3y=16 => 2*(6-y)+3y=16

2*6-2y+3y=16

12+y=16

y=16-12

y=4

Now, we know that y=4, so we use the first equation to find x:

x=6-y

x=6-4

x=2

We just found out that x=2 and y=4, so we will be calculating P:

P=5x+6y

P=5*2+6*4

P=10+24

P=34

i hope this helped :)

dont't really have enough info here but its likely

sss for the three sides being congruent ( its stands for side side side)

or

sas   for side angle side.   so a side is congruent and and angle and a side