Tania has 6 tiles with pictures of plants and 3 tiles with pictures of animals. tania keeps all the tiles on a mat with the pictures hidden and mixes them up. she then turns one tile face up and finds the picture of a plant on it. she removes this tile from the mat and turns over another tile without looking. what is the probability that the second tile that tania turns over has a plant on it?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Two numbers have a sum of 93. if one number is p, express the other number in terms of p.