Answer:
sum of exterior angles of polygon = 360°
therefore,
z = 360 - (105+145)
z = 360 - 250
z = 110°
Answer:
72.73% probability of selecting a girl, given the flip resulted inheads
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Coin resulted in heads
Student is selected at random from a class of six boys and sixteen girls.
Desired outcomes:
16 girls, so ![D = 16](https://tex.z-dn.net/?f=D%20%3D%2016)
Total outcomes:
16+6 = 22, that is, 22 students, so ![T = 22](https://tex.z-dn.net/?f=T%20%3D%2022)
Probability:
![P = \frac{16}{22} = 0.7273](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7B16%7D%7B22%7D%20%3D%200.7273)
72.73% probability of selecting a girl, given the flip resulted inheads
n+5=9 is the answer for this