Help What is the value of x? A: 41 B: 20 C: 21 D: 22
1 answer:
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Answer:
B
Step-by-step explanation:
To get probability of AT MOST 4 responses means all the probabilities Equal to or Less Than 4.
<u>From the table, that is probability of 0, 1, 2, 3 or 4</u>. <em>(OR in probability means adding)</em>
<em>Hence, we add the number of editorials for P=0,1,2,3, and 4 and then divide by total number of editorials.</em>
Answer choice B is right.
Given:
and
.
To find:
The quadrant.
Solution:
We know that,
In I quadrant, all trigonometric ratios are positive.
In II quadrant, only are positive and others are negative.
In III quadrant, only are positive and others are negative.
In IV quadrant, only are positive and others are negative.
We have,
and
.
Here, is positive and
is negative. So,
lies in the III quadrant.
Therefore, the correct option is C, i.e., III.