What type of angels are shown​

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

1. are the triangles similar and if so why? what is the value of x? show your work.

Which of the following is the correct ratio for converting kilograms to grams