complex roots occur in conjugate pairs
given 2 - 3√5 is a root then 2 + 3√5 is also a root
one of the other roots is 2 + 3√5
there are 2 roots of - 4
one of the other roots could be another - 4
A tip is to find the lcm aka lowest common factor ;)
Answer:
1. option D
2. option A
Step-by-step explanation:
Independent samples are samples that are selected randomly so that its observations do not depend on the values other observations. Thus, this sampling is independent. The sampling is independent because an individual selected for one sample does not dictate/affect which individual is to be in the second sample.
The variable is qualitative because it is an attribute classification. A qualitative variable are variables that are not numerical. It describes data that fits into categories (personality type).
Sample space = {6 cookies and 9 peanuts} = 15
1st draw :P(1 cookie) = 6/15
2nd draw P(also 1 cookie) = 5/14
3rd draw P(also 1 cookie) = 4/13
total probability = 6/15 x 5/14 x 4/13 = 4/91
Answer:
a = 2/5 = 0.4
b = 9/25 = 0.36
c = 19/50 = 0.38
Step-by-step explanation:
relative frequency = (number of desired results)/(total number of possible results)
a = 4/10 = 2/5 = 0.4
b = 18/50 = 9/25 = 0.36
c = 76/200 = 19/50 = 0.38