Answer:
21
Step-by-step explanation:
Note that n! = n(n - 1)(n - 2) ..... × 3 × 2 × 1, thus
7! = 7 × 6 × 5 × 4 × 3 × 2 × 1
5! = 5 × 4 × 3 × 2 × 1
2! = 2 × 1
Hence
cancel 5 × 4 × 3 × 2 × 1 on numerator/ denominator, leaving
= = 21
Answer:
<h2>See the explanation.</h2>
Step-by-step explanation:
We need to observe total 9 days.First we need to choose any 4 days from the 9 days. From these total 9 days, 4 days can be chosen in ways.
The probability of occurring an auto related accident is .
Similarly, the probability of not occurring an accident is .
Hence, the required probability is .
Since ABCD is parallelogram these rules apply:
Since this implies that
The answer is D.
Hope this helps.
r3t40
we know that
A line parallel to the x -axis is a horizontal line.
The slope of the horizontal line is equal to zero and the equation of a horizontal line is equal to the y-coordinate of the points that go through the line
In this problem the line passes through the point
the y-coordinate of the point is
so
the equation of the line is
the answer is the option C