Can you post the pictures and the other options ?
The equation for speed is:
![S =\frac{d}{t}](https://tex.z-dn.net/?f=%20S%20%3D%5Cfrac%7Bd%7D%7Bt%7D%20%20%20)
The student ran 100 meters in 11 seconds. Our distance is 100 meters and our time is 11 seconds.
![S =\frac{100m}{11s}](https://tex.z-dn.net/?f=%20S%20%3D%5Cfrac%7B100m%7D%7B11s%7D%20%20%20)
When we solve we get the following:
![S = 9.09m/s](https://tex.z-dn.net/?f=%20S%20%3D%209.09m%2Fs%20)
I am guessing since you were given the unit conversion of 1 mile = 1609 meters, you need to answer in miles per hour. If you do, you will need to use dimensional analysis:
![\frac{9.09m/s}{1} *\frac{1mi}{1609m} *\frac{3600s}{1hr} =\frac{32724mi}{1609hr} = 20.34mi/hr](https://tex.z-dn.net/?f=%20%5Cfrac%7B9.09m%2Fs%7D%7B1%7D%20%2A%5Cfrac%7B1mi%7D%7B1609m%7D%20%20%2A%5Cfrac%7B3600s%7D%7B1hr%7D%20%20%3D%5Cfrac%7B32724mi%7D%7B1609hr%7D%20%20%3D%2020.34mi%2Fhr%20)
All of the units except miles and hour cancel out, which makes this problem valid. Your answer in mph (mi/hr) would be:
20.34 miles per hour
3/6 is the answer according to my math
Answer: 3
Step-by-step explanation:
the amplitude in a sin equation y = asin(bx) + c is equal to a
in y = 3sin(9x), a =3
the amplitude is 3
The answer to you question is 2.78