SOMEONE PLEASE HELP ME ASAP THIS IS ALMOST DUE ILL MARK BRAINLIEST

64.5°

25

Step-by-step explanation:

64.5° (If they are similar, they have the same angle measurements).

You can figure out z by using ratios.

6/10=15/z

cross multiply

150=6z

150÷6=z

z=25 (Although, there is a problem with this.  If you use the Pythagorean theorem to find z, you get 28.8).

b

step-by-step explanation:

the word superfluous means unnecessary

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c