What is the probability to pick a queen or a nine card out of a standard deck of cards?

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.