Answer:
a)8
b)7
c)26
d)60
Step-by-step explanation:
The Venn Diagram is attached
For number of people who saw a single movie only
See the number associated with the movie name excluding all intersection parts
For people who watched only 2 movies exactly
Sum all the intersection parts of any 2 circle parts=6+12+8=26
For total number of students surveyed
Sum up every number in the Venn diagram including the number 5 outside 3 circles(it represents that 5 people did not watch any of the films)
=7+12+10+6+4+8+8+5=60
Percent change = change in value/original value.
13) 75 -> 38: 37 decrease/75 original
49.3333333333333% decrease
about 49% decreaase
14) 97 -> 3: 94 decreace/97 original
96.9072164948454% decrease
about 97% decrease
15) 77 -> 55: 22 decrease/77 original
28.5714285714286% decrease
about 29% decrease
16) 67 -> 28: 39 decrease/67 original
58.2089552238806% decrease
about 58% decrease
Answer:
Step-by-step explanation:
If the roots are 1 + 5i and 1 - 5i, then you need the factors that result from those roots. They are (x - 1 + 5i) and (x - 1 - 5i). Now what you do with those is FOIL them out. Doing that gives you the following:
(what a mess, huh?)
The good thing is that several of those terms cancel each other out. +5ix cancels out the -5ix; -5i cancels out the 5i; and the 2 -x terms combine to -2x. That leaves you with:
Obviously you're in the section in math that deals with complex (imaginary) numbers so you should know that i-squared is equal to -1. Making that replacement:
a = 1, b = -2, c = 25
If I am right it should be D because pigs make methane