Answer:
The exponential function to model the duck population is:
f(n)=415*(1.32)^n, where:
x is the duck population
n is the number of years
Step-by-step explanation:
In order to calculate the duck population you can use the formula to calculate future value:
FV=PV*(1+r)^n
FV=future value
PV=present value
r=rate
n=number of periods of time
In this case, the present value is the initial population of 415 and the rate is 32%. You can replace these values on the formula and the exponential function to model the duck population would be:
f(n)=415*(1+0.32)^n
f(n)=415*(1.32)^n, where:
x is the duck population
n is the number of years
The probability of landing in the shaded area is 2 out of 5. This can be written as a fraction
or a decimal 0.4
Answer:
Below
Step-by-step explanation:
2x + 5 > -1
Treat the equality sign (ex. < >) as the costumary equal sign (=).
2x + 5 + (-5) > -1 + (-5) ---- -5 will cancel out the 5 on the left
2x/2 > -6/2 ------ divide by 2 to single out the x
x > -3
Remember to draw an open dot. Draw an arrow from -3 to the extreme right.
First, we solve to find out what percent of the population has brown eyes and black hair. There are 303 people total, and 64 people with the description. After dividing, we find that about 21% of people have black hair and brown eyes.
Next, we use the chart to see that 9 out of the total 303 people have black hair and blue eyes. We divide this and see that this is only about 3%.
Last, we subtract 3 from 21 and get 18%
So, the answer is 18%
Answer:
the pitch of the sound
Step-by-step explanation:
because the speed stays the same and the echo has the same variables so i believe it is the pitch