Please help, basic algebra. Find the value of x

This is fractions casey shared a pizza with some friends. they each ate 1 third of the pizza. how many people shared the pizza

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

C. using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event. true of false