How do you write 5.09 104 in standard form?

In the diagram, gef and hef are congruent. what is the value of x

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

Y+ 2/y is it a polynomial in one variable or not? and if so, why?