Suppose you're playing hide and seek in a big house with 4 rooms upstairs and 5 rooms downstairs. You've looked in 2 of the downstairs rooms and know the hider is not those rooms. What is the probability the hider is downstairs given this information? (Assume equally likely outcomes).

Linet passes through (4.5) and is perpendicular to the line shown on the condirate grid.what is the equation of line t in standard form?

Can (2,3 and square root 10) be sides ona right triangle?

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.