Help! Geometry building blocks

XY = 11 centimeters

Step-by-step explanation:

Given info:

WZ = 28cm

Y is the midpoint of XZ

What are we asked to find:

XY

Solve:

WZ is the sum sum of WX + XY + YZ

The variable is a

We know that WZ is 28, and values for WX, XY, and YZ are given as expression

So:

28 = (a + 1) + (2a + 1) + (2a + 1)

Combine like terms:

28 = 5a + 3

Solve for a:

28 - 3 = 5a + 3 - 3

25 = 5a

25 ÷ 5 = 5a ÷ 5

5 = a

Now that we solved for a, we can simply plug a in for the expression (2a + 1)

(2a + 1) =

(2*5 + 1) =

(10 + 1) = 11

XY in centimeters is 11

-Chetan K

i believe it's a.

i'm not sure on this one, most likely correct.