What is the value of y

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Plz a. s. a. p. the table shows the number of male and female contestants who did not win a prize. what is the probability that a randomly selected contestant won a prize, given that the contestant was female? write the probability as a percent. round to the neares tenth, if needed.

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,