Y varies inversely as x. When x=10, y=20. Find y when x=50
1 answer:
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If you mean this: 
then x = 0. The property in play here is the following: Any number raised to the "0" power is equal to "1". In this case, we would need to set the exponent of 3x = 0 and solve for x...
If you mean the equation:
then to solve for x(your blank), simply divide both sides of the equation by 
:
You would have x =
this can also be written as 
If you mean the equation:
You would have x =
Answer:
The total number of combinations in which the movies can be rented such that there is at least one documentary is 27589.
Step-by-step explanation:
The total movies are given as 19 mysteries +12 documentaries=19+12=31
Now the number of total combinations such that 4 movies are rented is given as
Now the number of total combinations with no documentary is given as
So the number of combination such that at least one movie is documentary is given as
=Total Combinations-Combinations with no documentary
=31465-3876
=27589
So the total number of combinations in which the movies can be rented such that there is at least one documentary is 27589.