In a class of 30 students, 12 have a cat and 19 have a dog. There are 6 students who do not have a cat or a dog. What is the probability that a student chosen randomly from the class has a dog?

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

If i had 1234 apples and 1 banana what is the total amount