Check my answer ?

3. in triangle xyz, xy = 15, yz = 21, and xz = 27. what is the measure of angle z to the nearest degree?

a. 34***
b. 39
c. 56
d. 117

The correct option is A.

Step-by-step explanation:

Given information: In triangle XYZ, XY = 15, YZ = 21, and XZ = 27.

It means z=15, x=21, y=27.

Using Law of Cosine.

The measure of angle Z is approx 34 degree. Therefore option A is correct.

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.