Plug second into the first.
2x + (-5 - 2x) = 5
2x - 5 - 2x = 5
2x - 2x = 10
0 = 10
No solution.
Answer:
11,800 different four letter permutations can be formed using four letters out of the first 12 in the alphabet
Step-by-step explanation:
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
![P_{(n,x)} = \frac{n!}{(n-x)!}](https://tex.z-dn.net/?f=P_%7B%28n%2Cx%29%7D%20%3D%20%5Cfrac%7Bn%21%7D%7B%28n-x%29%21%7D)
In this question:
Permutations of four letters from a set of 12 letters. So
![P_{(12,4)} = \frac{12!}{(12-4)!} = 11800](https://tex.z-dn.net/?f=P_%7B%2812%2C4%29%7D%20%3D%20%5Cfrac%7B12%21%7D%7B%2812-4%29%21%7D%20%3D%2011800)
11,800 different four letter permutations can be formed using four letters out of the first 12 in the alphabet
Answer:
H and J
Step-by-step explanation:
Answer:
1/125, 1/625, 1/3125
Step-by-step explanation:
a8=25*(1/5)^7=25/78125=1/3125
An infinite number of pairs of whole numbers have a sum of 40.