Write an explicit formula for a_na
1 answer:
Explicit formula for the sequence 29,20,11....... is
Given :
term of the sequence 29, 20, 11, ...
We need to find out the formula for the nth term of the given sequence
Lets find out whether the given sequence is arithmetic or geometric
In the given sequence , common difference is 9
we can say difference =-9
General explicit formula
where a1 is the first term
common difference d=-9
substitute the values
Explicit formula for the sequence 29,20,11....... is
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Answer:
The correct option is B.
Step-by-step explanation:
From the given figure it is nices that the length of sides AB, BC and AC are 20, 22 and 35. The line AD is angle bisector.
Let the missing value be x.
The Triangle Angle Bisector Theorem states that the angle bisector of an angle of a triangle divides the opposite side in two segments that are proportional to the other two sides of the triangle.
Since AD is angle bisector, therefore
Add 35x both sides.
Divide both sides by 55.
Therefore, second option is correct.
Using the normal distribution, it is found that 63.18% of the area under the curve of the standard normal distribution is between z = − 0.9 z = - 0.9.
<h3>Normal Probability Distribution</h3>The z-score of a measure X of a normally distributed variable with mean and standard deviation
is given by:
- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
The area within 0.9 standard deviations of the mean is the <u>p-value of Z = 0.9(0.8159) subtracted by the p-value of Z = -0.9(0.1841)</u>, hence:
0.8159 - 0.1841 = 0.6318 = 63.18%.
More can be learned about the normal distribution at brainly.com/question/4079902
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