NEED ANSWERS NOW 35 POINTS

Lydia tosses two six-sided number cubes.

List the sample space.
What is the probability of Lydia rolling pairs of the same number?
What is the probability that at least one number will be a 3?

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?

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

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.