Answer:
see below
Step-by-step explanation:
7^7−7^6
Factor out 7^6
7^6 (7-1)
7^6 *6
This has a factor of 6 so it is divisible by 6
Answer:
42-12
Step-by-step explanation:
Here you go mate
Step 1
6(7-2) Equation
Step 2
6(7-2) simplify
6x5
answer
42-12=30 check
Answer:
Population of bacteria four hours later 
or nearest whole number
Step-by-step explanation:
Given,
Let amount of bacteria four hours later is=A
Rate of increase of bacteria per hour 
Initial population of bacteria is =54
Time 4 hours
Find the population of bacteria 4 hours later
Solution,
![\left [ x \right ]_{54}^{A}=4.0565/1.3\left [e^{1.3t} \right ]_{0}^{4}](https://tex.z-dn.net/?f=%5Cleft%20%5B%20x%20%5Cright%20%5D_%7B54%7D%5E%7BA%7D%3D4.0565%2F1.3%5Cleft%20%5Be%5E%7B1.3t%7D%20%20%5Cright%20%5D_%7B0%7D%5E%7B4%7D)
Population of bacteria 4 hours later is
I am not entirely sure what your asking but i think you mean which will coast the least and that would be 8 since it’s the smallest amount
Answer:
Stratified sampling
Step-by-step explanation:
The is a type of sampling in which the population of interest is divided into subpopulations and then each subpopulation is randomly sampled.
In this case study, instead of just doing a random sampling of all students, the research divided the population of all students into subpopulations which includes freshmen, sophomores, juniors and seniors and then she makes a random sampling of each of these subpopulations.
