Please help!! Need help with Geometry! Would really appreciate it!!

The first one

Step-by-step explanation:

Since a line is an infinite object, with no starting or ending point we symbolize it by an arrow over two points that belong to this line:

A ray, on the other hand has a starting point and no ending point.

So, in the picture we have a pair of rays, with common points to the line XY

Namely:

XW e ZY

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

d

step-by-step explanation: