Answer:
1. 120 ways
2. 720 ways
Step-by-step explanation:
When the order is important, we have a permutation.
When the order is not important, we have a combination.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
1. If the jobs are all the same.
Same jobs means that the order is not important. So
3 from a set of 10.
120 ways
2. If the jobs are all different.
DIfferent jobs means that the order matters.
720 ways
You need to have a little more detail in your answer, sir or madam.
Yes, -9 can be written as a fraction over 1, meaning it is a rational number
Well, to know right away whether or not a number is equal to 1, you need to know what 1 is in scientific notation. 1 * 10^0. Easy enough :) To know if the number is greater than one, any positive number multiplied by 10^a number higher than 0 is greater than one. As well as any number greater than one multiplied by 10^0 or a positive number. For numbers less than one, the way to know is if the number is being multiplied by 10 ^ a negative number. I hope this helps :)
It can't be simplified because 1/3x and -5/7 aren't like terms and therefore you cannot do addition or subtraction with them.
If you meant x as in multiplied by then here is the solution:
1/3*-5/7
(1*-5)/(3*7)
-5/21
Hope this helps :)
