From a standard deck of cards, what is the probablility that yo uchoose a red card and then a 3, assuming you replaced the first card

Since there are 52 cards in a deck (It's a miracle they didn't lose any- I always lose cards), and half of those are red, 26 cards are red (with the other 26 being black), and since there are four of each number card in a deck, there would be four threes. So the probability that you choose a red card would be 1/2 (50%, if you need percentages), while the probability that you choose a card with a three would be 4/52, or 1/13 (7.7%).

t = 3.11 seconds

Step-by-step explanation:

Given that,

At the circus, a clown is shot from a cannon. This situation can be modeled by the function :

Where

'h' is height in feet and 't' is time in seconds

We need to find how long did it take for the clown to reach his highest point. It can be calculated as follows :

We need to solve for t. It can be calculated as follows :

So, the required time is 3.11 seconds.