A fellow classmate tosses 5 coins and finds that 3 of them come up tails. Which of the following is the best conclusion for her
2 answers:
<h2>Answer:</h2>
Option: A is the correct answer.
A.This could easily happen with a fair coin after only 5 flips.
<h2>Step-by-step explanation:</h2>As we know that when a coin is tossed 5 times than the total number of outcomes that are resulting from these flips are:
where:
Hence, the total outcomes that are possible are: 32
Also, when a coin is fair any of the possibility could come up:
- All are tails
- All are heads.
- One tail four heads.
- One head four tail.
- Two tail three heads.
- Two heads three tails.
Hence, option: A is the correct answer.
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The first step is to name the equations to make the process of solving them easy.
The second step is to multiply each of the equations by the coefficient of the x term in the other equation. In this case, we will multiply equation (1) by 5 to get equation (3) and then multiply equation (2) by 6 to get equation (4).
The next step is to add equation equation(3) and (4) together to get equation (5) as shown below;
The next step is to take the value of y and substitute it into any of the equations above. For this solution, I pick equation (1). The work done to solve for x is shown below.;
The solution for this system of equations is