Use the picture where it says a, b, c, d those are the steps

Step-by-step explanation:

Direction: Opens down

Focus: ( 0,-0.1)

Axis of Symmerty: X=0

Directix: y=0.1

Type  on a algebra calcator and it will show you the graph and the eqaution.

Hope this helps!

answer: 1+1

step-by-step explanation: 1+1 is at least 2

look at the picture.

1.

ef : ab = 2 : 3

gf : cb = 2 : 3

gh : cd = 2 : 3

he : da = 2 : 3

2.

∠a ≅ ∠e

∠b ≅ ∠f

∠c ≅ ∠g

∠d ≅ ∠h

3.

use pythagorean theorem:

the length of the abcd trapezoid sides:

|ab| = 3 cm

|bc| = 10 cm

|cd| = 3(3) cm = 9 cm

|da| = 8 cm

the perimeter of abcd = 3 + 10 + 9 + 8 = 30 cm

the ratio of perimeters of the tarapezoids is equal 2 : 3.

substitute:

      cross multiply

      divide both sides by 3