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shannydouglas
17.09.2019 •
Mathematics
The area of triangle b is 25 times greater than the area of triangle a.the perimeter of triangle b is how many times greater than the perimeter of triangle a?
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Ответ:
The ratio of areas in this example is 1:25.
The ratio of areas is the square of the ratio of perimeters.
Ответ:
38 meter per second
Step-by-step explanation:
Given: The variable d models Rachel's distance from her exit (in meters) t seconds after the cameras began recording the stunt.
where -38 is the rate of change of function .
Since speed is the rate of change of position with respect to time , thus
Speed =-38 meter per second which shows decrease in distance with respect to time.
At t=0 second, d=220 meters
At t=1 second ,
meters
Distance traveled in 1 second = 220-182=38
Now, Rachel's speed=![\frac{Distance}{time}](/tpl/images/1203/6637/6a9a3.png)
Rachel's speed=
=38 meter per second