Abag contains 5 black marbles and 4 white marbles. a spinner has 3 equal sections labeled 1 through 3.
what is the probability of drawing a black marble from the bag and spinning a 1 on the spinner?

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.