What do mathematical proofs do?

What is 2:5*36·45:76

I need to know how to prove if an angle is congruent or not.

Andrew has 10 more goldfish than todd. together they have 50 goldfish. how many goldfish each boy have?

At your high school, you are trying to determine the probability that a student takes Spanish given that the student is taking Marketing? Explain how you would determine this probability.

Clayton places tiles that spell the word time in a bowl. He draws one tile from the bowl and then without replacing it, draws another tile.

What property is 3x (2x6) = (3x2) x6

Express the given sets in notations: The set consisting of the elements 0, - 1, - 4, - 3?

8 sided die probability of rolling odd number

Write a problem that could be represented by the equation 5n-6=19

A large farm has 75 acres of wheat and 62.5 acres of corn. The farm crew can harvest the the wheat from 12 acres and the corn from 10 acres per day. In how many days will all of the fields be harvested?