Look at the picture.

For XY and ZX use the Pythagorean theorem.


The perimetero fo XYZ:

9 X 9 X 20 X 20
Pido perdón para mí español, pero creo que este es la ecuación.
Answer:
10y=27+7
10y=34
y=34/10
y=3.4
Step-by-step explanation:
Firstly 7 is added to 27
Then adding 7 and 27
Dividing 34 by 10
Answer:
$5.15
Step-by-step explanation:
$20
-$14.85 =$5.15