If there are 52 cards in a standard deck, what is the fractional probability of randomly pulling the Queen of diamonds from the deck?

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?