Which of the following is not a way to prove triangles similar?

a) proving the sides are in proportion.

b) proving two angles are congruent.

c) proving all sides are congruent.

d) describing a sequence that can map one triangle onto the other.

Rename mixed numbers before you can subtract are what

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?