Answer:
Following are the solution to the given question:
Step-by-step explanation:
Confidence Interval for both the percentage of all x-ray machines
p = the machinery's share is not working:

Lower
Confidence interval = p - error margin
Upper
Confidence Interval = p + error margin
So,
Confidence Interval 
They made 3000$ in profit 500x100=50k
470x100=47k
47,000-50000=3000
190 ÷ 4 = 47.5 47.5 × 6 = 285 he could bike 285 in 6 days
Step-by-step explanation:
6.) 8p = 8x9 = 72
8.) 4(d+7) = 4(-2+7) = 4(5) = 20
can't read all of 10 to give an answer
Eres una pinche pendejha huevona
Hija de tu re Phuta bomba madreh, tienes una cara de vaca y puedes venir a mamrmeh la vergha