Ajar contains 4 red marbles and 8 blue marbles. a marble is drawn from the jar. what is the probability that a red marble is drawn?

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

Which of these angles are supplementary? a. 100o and 90o b. 78o and 102o c. 54o and 146o d. 12o and 78o

What is 10+10+20 about the origin the square root of a triangle.