Answer:
B) 2 hours
Step-by-step explanation:
If machine A complete a job in 3 1/2 hours or 7/2 of an hour
means that in one hour finished 1÷ 7/2 or 2/7
If machine B complete a job in 4 2/3 hours or 14/3 of an hour
means that in one hour finished 1÷ 14/3 or 3/14 of an hour
Then the two machines working together in one hour will make
2/7 + 3/14 = (4 + 3)/ 14
or 7/14 = 1/2
half of the job. Therefore these two machines working together will take two hours
-8y + 4(11y - 3) =
-8y + 44y - 12 =
36y - 12 <==
Answer:
0.75 or 75%
Step-by-step explanation:
The probability that a resident lives in a house and owns their own business is:

The probability that a resident lives in an apartment and owns their own business is:

Therefore, the probability that a person lives in a house, given that they own their own business is:

The probability is 0.75 or 75%.