This is the answer I found. Hope this helped
Answer:
Step-by-step explanation:
The areas of the two figures are the same.
sqrt(-49) / [ (7-2i) - (4+9i) ]
= 7i / (3 - 11i)
= 7i (3+11i) / [ (3 - 11i) (3 + 11i) ]
= (21 i - 77) / (9 + 121) = choice (d), (-77 + 21i) / 130
75% you find this by dividing 15 by 20 then multiplying the answer by 100
15 / 20 = .75
.75 x 100 = 75
15/20 = 75% of 100
Option 2 would be biased. Asking people participating in a walkathon means you are asking people that are already volunteering. To get a non-biased sample, you have to be sure that you are including people that are not guaranteed to be volunteers; you don't have that in this situation.
