Number one is -6 and 10
Number two is -55 and 4
You put all x on left side and numercial on the right side
13x-12x = 4+4
x = 8
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
Answer:
The height is 14.3 km
Step-by-step explanation:
Given
--- angle of elevation
Required
Determine the height above the ground
The question is illustrated using the attached image.
To calculate the required height, we make use of:
Where AB represents the height and BC, the distance.
So:
Make AB the subject
--- approximated
Answer:
80
Step-by-step explanation:
-400 / -5 = 40
Hope that helps!
