Answer:
about 63.1%
Step-by-step explanation:
For the first song, it is certain it isn't a duplicate. For the second song, the probability that it is not a duplicate is 4999/5000. The probability the third song is not a duplicate is 4998/5000.
Hence the probability that none of the 100 songs is a duplicate is ...
5000!/4900!/5000^100 ≈ 0.369120
Then the probability that one or more is a duplicate is ...
1 - 0.369120 ≈ 0.630880
Answer:
-2/5
Step-by-step explanation:

Expand parentheses:

Hope this helps!
Answer:
This is not a real question rephrase
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
From Figure
Sides of Triangle

Now, using concept
Perimeter of triangle = Sum of the sides of triangle
So,
Perimeter of triangle = 
Adding
and
, so,
Perimeter of triangle = 
This can be written as
Perimeter of triangle = 
Adding 15 and 10,
Perimeter of triangle = 
So, the correct choice is = 
Hope this helps.
Answer:
gradient m = - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the gradient and c the y- intercept )
y = - x - 3 ← is in slope- intercept form
with gradient m = - 1