Answer:
99
Step-by-step explanation:
We can split this up by doing the tens and then the ones. 12 = 10 + 2, so we have 87 + 12 = 87 + 10 + 2 = 97 + 2 = 99.
Answer:
- √3 / 3, 4th quadrant
Step-by-step explanation:
cot 5π/3 = cot 5 x 180° / 3 = cot 300° ( 4th quadrant)
cot 5π/3 = - √3 / 3
Solution :
Given :
X = the number of boys in a family of four children
Families having four children are chosen randomly.
The gender distribution in the four child family are equally probable.
Thus,
X P(X) CDF
0
= 1/16 
1
= 1/4
2
= 3/8 
3
= 1/4 
4
= 1/16 1