Which number is an irrational number? square root 9/16, 9/31, square root 9/31, 0.6 repeating 6

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

Answer this all of it i don’t know how to do it i wasn’t there because i was sick and it’s a nti today so i home not knowing what to do

Aday's production of 850 parts contains 50 defective parts. two parts are selected at random without r replacement. let the random variable x equal the number of defective parts in the sample. find the cumulative distribution function of x.