PLEASE HELP Which criteria must be true to conclude that ABCD is a parallelogram?

AC¯¯¯¯¯≅BD¯¯¯¯¯

AB¯¯¯¯¯≅DC¯¯¯¯¯ and AB¯¯¯¯¯∥DC¯¯¯¯¯

AB¯¯¯¯¯≅DC¯¯¯¯¯ and AD¯¯¯¯¯∥BC¯¯¯¯¯

AB¯¯¯¯¯≅DC¯¯¯¯¯

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6

Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)