Please take a look at the picture
2 answers:
Answer:
B)
Step-by-step explanation:
The value is the same as
since the negatives cancel out to make a positive.
Option A is incorrect since the overall value of the term would be negative. Option B however is correct since there will not be a negative value in the denominator of a fraction and thus it cancels out with the negative in front of the fraction to produce the value of which is the same as the expression given in the question, thus it is option B.
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Answer:
Option A:
Step-by-step explanation:
We are given with the series - 9 - 3 + 3 + 9 + . . . . + 81.
Note that the second term is obtained by adding 6 to the first term.
Each consecutive term is obtained by adding 6 to its previous term.
Therefore, we should be adding six two times to get the third term from the first term.
Putting it Mathematically, we get: - 9 + 6n
This gives all the terms of the sequence. Since, we have to add all the terms we take the summation.
Also, note that 81 is the 15 th term.
Therefore, - 9 - 3 + 3 + 9 + . . . . + 81 =
Hence, the answer.
It is a linear function. The graph is a straight line.
We need only two points to plot a graph of a linear function.
Select two any x values and calculate the y values:
Given:
The expression is:
To find:
The value of the given expression when .
Solution:
We have,
Substituting in the above expression, we get
Therefore, the value of given expression at is 59.