Answer: C
Step by step:
- Use the pythagoras' theorem ( c² = a² + b² ) to find the length of AB.
- Use trigonometry to find the 2 missing angles of the triangle.
That's all!
What are ratios of lengths of the longer leg of 30-60-90 triangle to the length of it hypotenuse
1 answer:
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Answer:
x = 3 and x = -7
Step-by-step explanation:
The given quadratic equation is . We need to find the solution of this equation.
If the equation is in the form of , then its solutions are given by :
Here, a = 1, b = 4 and c = -21
Plugging all the values in the value of x, such that :
So, the solutions of the quadratic equation are 3 and -7.
Using the binomial distribution, it is found that the variance of the number that pass inspection in one day is 5.7.
For each component, there are only two possible outcomes, either it passes inspection, or it does not. The probability of a component passing inspections is independent of any other component, hence, the binomial distribution is used to solve this question.
Binomial probability distribution
Probability of <u>exactly x successes on n repeated trials, with p probability</u>, and has variance given by:
In this problem:
- 95% pass final inspection, hence
- 120 components are inspected in one day, hence
.
The variance is given by:
The variance of the number that pass inspection in one day is 5.7.
To learn more about the binomial distribution, you can take a look at brainly.com/question/24863377