Respuesta :

olumideolawoyin

Answer:

1) x = 16cm

y = 15cm.

2) All options are correct.

3) step 1: x + y

step 2: 12y

step 3: 4y

step 4: 12

step 5: 3

step 6: xy

Step-by-step explanation:

Please find the attached.

Ver imagen olumideolawoyin

Answer:

Step-by-step explanation:

In Triangle IER:

p=12 cm

b=9 cm

h=y cm

using Pythagoras theorem:

h² = p²+ b²

or y²=12²+9²

 y²=225

or y= 15.

Now in triangle RIT

p=15

b=20

h= x+9

here

h²=p²+b²

h²= 15²+20²

h²= 625

h= 25

9+x= 25

x=16

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