For the first digit you are choosing from 2 digits
for the second digit you are choosing from 2 digits
for the third digit you are choosing from 2 digits
2*2*2=8
111
110
011
101
000
001
100
010
However......
A number doesn't usually start with a 0 or 0s.
Therefore, if you want 3-digit numbers and not just permutations using 0 and 1, then you must eliminate
011, 000, 001, and 010
Seeing that the first digit can't be 0, you choose from 1, then 2, and then 2 digits again; 1*2*2=4 numbers
You choose which answer best suits your problem.
Answer:
it should be 23 feet long
Step-by-step explanation:
It's 9/7 but you can try simplifying after that
Solution
1. The algebraic expression = -0.5n - 3.8, where n is the number of minutes.
2. Here the variable "n" represents the number of minutes.
Thank you.
