Answer:
150
Step-by-step explanation:
A=bh
A=15×10
A=150
Answer:
5/126
Step-by-step explanation:
Let's go through this scenario step-by-step. At the beginning, we have a 5/9 possibility of picking a boy - 5 boys out of 9 students. If we pick 1 boy, we now have 4 boys out of 8 students we could potentially pick, giving us a 4/8 or 1/2 chance of picking a second boy after the 1st. For the third boy, we have 3 out of 7 remaining students, giving us a 3/7 chance of picking a third after the first two, and for the fourth boy, we 2 possibilities out of 6, giving us a 2/6 or 1/3 chance of picking the 4 boys.
To find the total probability, we can multiply all of these individual ones together:
![\frac{5}{9} \cdot\frac{1}{2} \cdot\frac{3}{7} \cdot\frac{1}{3}\\\\=\frac{5}{9} \cdot\frac{1}{2} \cdot\frac{1}{7}\\\\=\frac{5}{126}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B9%7D%20%5Ccdot%5Cfrac%7B1%7D%7B2%7D%20%5Ccdot%5Cfrac%7B3%7D%7B7%7D%20%5Ccdot%5Cfrac%7B1%7D%7B3%7D%5C%5C%5C%5C%3D%5Cfrac%7B5%7D%7B9%7D%20%5Ccdot%5Cfrac%7B1%7D%7B2%7D%20%5Ccdot%5Cfrac%7B1%7D%7B7%7D%5C%5C%5C%5C%3D%5Cfrac%7B5%7D%7B126%7D)