The number of days needed to remodel a house varies inversely as the number of people working on the job. it takes 18 weeks for 4 people to complete the project. if the job has to be finished in 8 weeks, how many people are needed?

To solve this problem, you must follow the proccedure below:

 1. First, you must calculate the Constant of proportionality "k".

 2. The problem says that the number of days needed to remodel a house varies inversely as the number of people working on the job. Then:

 Number of days=K/Number of people
 K=(Number of days)(Number of people)

 18 weeks=135 days

 K=135x4
 K=540

 3. Now, you have:

 Number of days=540/Number of people

 8 weeks=60 days

 Number of people=540/60
 Number of people=9

 How many people are needed?

 The answer is: 9

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

0 = ( 2 - 4 ) ( p + q )0 = ( 2 - 4 ) ( 2 + 5 i ),   by multiplying these0 = ( 4 + 10 i - 8 - 20 i )0 = 4 - 8 + 10 i - 20 i0 = - 4 -10 i   0 = 2 ( - 2 - 5 i )0 / 2 = - 2 - 5 i- 2 - 5 i = 0- 5 i = 2i = 2 / - 5