Answer:
A reasonable estimate of the probability is equal to 
or 
Step-by-step explanation:
we know that
The probability of an event is the ratio of the size of the event space to the size of the sample space.
The size of the sample space is the total number of possible outcomes
The event space is the number of outcomes in the event you are interested in.
so
Let
x------> size of the event space
y-----> size of the sample space
so
In this problem we have
substitute
Convert to percentage
Hmm, y=1 is directix
means it opens up or down
we will be using
(x-h)²=4p(y-k) where (h,k) is vertex and p is the distnace from focus to vertex and from vertex to direcitx
focus is (-1,-3)
find distance between y values because directix is a y value
midpoint is the vertex
from -3 to 1 is 2 units
since focus is below directix, it opens down, and p is negative
it is 2 units above focus
so at (-1,-1)
and p=-2
(x-(-1))²=4(-2)(y-(-1))
(x+1)²=-8(y+1) is da equation
Answer:
1. B
2. D
Step-by-step explanation:
Using the Instant-runoff method, it can be inferred that the winner is the tacos because after the first vote, they get 3 more votes that allow them to have more than half of the possible votes (option B).
<h3>What is the instant-runoff method?</h3>
Instant-runnof is a voting method whereby a single winner is selected from a wide variety of options. This method is characterized by allowing voters to choose different options on a scale of first option, second option, third option.
According to the above, in the first vote the sandwiches are eliminated because they had the lowest vote (3 votes). Then, a new vote must be carried out with the products that were left that were Pizza and Tacos.
On the second ballot, tacos get 3 more votes because voters who voted for Sandwich on the first ballot had Tacos as their second choice. So the bottom line is Pizza with 9 votes and Tacos with 11 votes.
In short, the Tacos win by having more than half of the possible votes 11/20.
Learn more about survey in: brainly.com/question/17373064
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