When randomly choosing two cards from a standard deck of cards without replacement, what is the probability of choosing a club and then a heart?

3/52

1/17

1/16

13/204

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33