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gabrielgbobo99
10.10.2019 •
Mathematics
The function below shows the number of car owners f(t), in thousands, in a city in different years t: f(t) = 1.1t2 − 2.5t + 1.5the average rate of change of f(t) from t = 3 to t = 5 is thousand owners per year.answer for blank 1:
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Ответ:
The average rate of change is :![6.3](/tpl/images/0306/9502/60553.png)
Step-by-step explanation:
The number of car owners is modeled by the function;
The average rate of change of f(t) from t=3 to t=5 is simply the slope of the secant line connecting:
(3, f(3)) and (5,f(5))
Which is given by:
Now, we substitute t=3 into the function to get;
We substitute t=5 into the function to get;
Therefore the average rate of change is :![\frac{14.5-3.9}{2}=6.3](/tpl/images/0306/9502/4babf.png)
Ответ:
x=3/2
y=4
Step-by-step explanation:
3y=6x+3
3y=4x+6
we see that 3y=3y so even the right side of the equations are equal.
6x+3=4x+6
6x-4x=6-3
2x=3
x=3/2
so easily we find y
we found that x=3/2 so
3y=6*(3/2)+3=9+3=12
y=12/3=4
so the solution of simultaneous equation is
x=3/2
y=4