Aclass has 21 girls and 12 boys. what is the probability that a boy's name is drawn at random

There are a total of 33 students in the class (21+12=33). There are 12 boys in the class so the chance of drawing a boys name would be 12/33 which reduces to 4/11. This means you will draw a boys name 4 times for every 11 draws. To find the percent probability, just divide...

4/11 =.3636

multiply by 100 to convert to a percentage ( move decimal to the right 2 places).

.3636 = 36.36%

There is a 36.36% chance that a boys name is drawn.

4y - 6 + y^2 - 9 = y^2 + 4y - 15y^2 term terms- termstotal of 3 terms when simplified