How do you know when to use the Secant-Secant Product Theorem or the Secant-Tangent Product Theorem?
1 answer:
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Answer:
Probability = 0.190
Step-by-step explanation:
Given:
Number of questions, 'n' = 20
Each question has four choices.
Let event of choosing correct answer be success and its probability be represented by 'p'.
Therefore, event of choosing wrong answer is failure and its probability be represented by 'q'.
Now, probability of success is choosing one correct answer out of 4 options. So,
Now, 'p' and 'q' are complements of each other. Therefore,
Now, we need 4 successes. Therefore,
Using Bernoulli's theorem to find 'x' successes from 'n' questions, we get:
Plug in 4 for 'x', 20 for 'n', 0.25 for 'p' and 0.75 for 'q'. Solve.
Therefore, the probability of getting 4 correct answers out of 20 questions is 0.190.
The solution to the statement 4 + (-4) is correctly given by the third number line.
- The solution given by plot 1 is : (-4) + (-4) as both arrows points 4 units to the left.
- The solution given by plot 2 is : ( 4 + 4) as both arrows points 4 units to the right.
- The solution given by plot 3 is (4) + (-4) as one arrow points 4 units to the left and the other points 4 units to the right.
- The solution given by the plot 4 is (-4 + 8) as one arrow points 4 units to the left and the other points 8 units to the right.
Therefore, the Number line which shows the solution 4 + (-4) is the third number line.
Learn more :brainly.com/question/16191404
