15 percent I'm pretty sure correct me if wrong plz
Answer:
Number of carbon atoms present in the sample are 391.
Step-by-step explanation:
We are given that,
Ratio of carbon to hydrogen atoms = 1 : 4
It is given that a sample of methane consists of 1564 hydrogen atoms.
Let the carbon atoms in the sample = x
So, we have the relation,

i.e. 
i.e. 
i.e. x= 391
Hence, the number of carbon atoms present in the sample are 391.
We are told that a population of insects grows exponentially and we are given a table of data about insect population growth. We are asked to find population of insects at the end of week 11.
The initial insect population is 20 and at the end of 1st week population increases to 30.
Let us find growth percentage of insect population,




We can see that insect population is growing at rate of 50% per week.
Now let us write an exponential function for our population.
, where P(w) represents population at the end of w weeks.
Let us substitute w=11 in our function to find insect population at the end of 11 weeks.




Therefore, population of insects at the end of 11th week will be 1730.
Answer:
1, I have attached the number line.
2, I have provided two examples. One shows a different any quality symbol, and the other one shows the same based on absolute values.
3, you can see using the number line that -0.5 is the closest to zero.
Answer:
(-4,5)
Step-by-step explanation:
90 degree rotation = (-y,x)