For the first one, it's (a^8b^6). For the second one, it's 81m^8n^20.
<span>Say the code only needed to be one number long. Going from 0-9, there are ten digits. Therefore, there are ten unique codes.
Now say the code has to be two numbers long. There are ten possibilities
for the first digit, 0-9. But the second digit only has nine
possibilities, since each number has to be different. (The first number
might be 0, so the second can only go from 1-9) For each of the first
ten possibilities, there are nine possibilities for the second. We
multiply those two numbers together, 10 * 9, and we get 90.
Now we just extend the logic. The third number only has eight
possibilities, while the fourth number only has seven. 10 * 9 * 8 * 7 =
5040 possible codes. I hope this helped! has a great day! :)</span>
Answer:
i dont understand it
Step-by-step explanation:
Answer:
(0,-4)
Step-by-step explanation:
First let's convert 7.5% into a decimal by doing Beyoncé on it and move the decimal two places to the left.

Now let's multiply the cost of the DVD by the converted percent,

Now let's add the above number to the original price, remember, $2 is not exact.

~~
I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!!
~Zoey