Answer:
About 72%
Step-by-step explanation:
All you have to do is divide the number of children who traveled in third class (79) by the total number of children (109)
79/109=.724770642 OR 72%
Answer:
a) 
b) 
Step-by-step explanation:
Let's define the following events first:
F: The event that a course has a final exam.
R: The event that a course requires a research paper
From the info provided we have that:
P(F and R) =0.32
So then we can create a Venn diagram as we can see on the figure attached.
a. Find the probability that a course has a final exam or a research project.
For this case we can find the probability like this:

b. Find the probability that a course has NEITHER of these two requirements.
For this case we can use the complement rule and we can find the probability like this:

And that's the same value obtained with the diagram.
Answer:
3)Quadratic
Step-by-step explanation:
Brainliest?
Sin(theeta) = square root(3)/2
theeta = sin inverse [square root (3)/2]
theeta = 60 degrees
as seen from trignometric table
Answer:
%176
Step-by-step explanation:
1/4n x 1/2 = 22
Solve the equation and get 176.