In a certain lottery, 5 numbers between 1 and 13 inclusive are drawn. These are the winning numbers. How many different sections
2 answers:
Answer: 1287
Step-by-step explanation:
When order of selecting things does not matter, then the combination od n things taking r at a time is given by :-
Given : The total numbers in lottery = 13
The total numbers to choose to win the lottery =- 5
Then , the combination of 13 numbers taken 5 at a time is given by :-
Hence, the number of different selections = 1287
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Similarly, if you buy four pens and two mechanical pencils, you spend 4p+2m, which is 8$, because now you get a $2 change. Put these equation together in a system:
Now, if you multiply the first equation by 2, the system becomes
Subtract the second equation from the first:
Plug this value into the first equation to get
The given equation is equivalent to Option D .
The mission option is
A. x+10= x+10
B. x+9 =x² + 20x + 100
C. x² +81 = x² + 100
D. x² + 81 = x² +20x + 100
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Therefore the given equation is equivalent to Option D .
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