"45 years or over" includes all of the age groups "45-64", "65-74", and "75 or over". These age groups are disjoint (no individual can belong to more than one group), so the probability of picking someone that's at least of 45 years of age is the sum of the probabilities that a person belongs to any one of these groups. That would be
Umm do we get like A, B C D answers to help you with?
Answer:
7)probability
6)intercept
5)chance
10)hybrid
Step-by-step explanation:
Answer:
12 driveways
Step-by-step explanation:
Set up a proportion:
![\frac{3000}{75}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3000%7D%7B75%7D%20)
=
![\frac{4000}{x}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4000%7D%7Bx%7D%20)
To solve cross multiply:
3000x=300000
divide both sides by 3000:
3000x/3000=300000/3000
x=100
It will take her 100 hours to drive 4000 miles assuming she continues to travel at this rate.