First, convert km/h into m/s by dividing 1618 by 3.6
using the formula
![e_{k} = \frac{1}{2} mv^{2}](https://tex.z-dn.net/?f=e_%7Bk%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20mv%5E%7B2%7D%20)
![e_{k} = \frac{1}{2} (8251)(449.44)](https://tex.z-dn.net/?f=e_%7Bk%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%288251%29%28449.44%29)
![e_{k} = 1.85](https://tex.z-dn.net/?f=e_%7Bk%7D%20%3D%201.85)
MJ
Answer:
d because the fomula is always (x,y)
Answer:
x=2;DE,EF=9,DF=5
Step-by-step explanation:
Since DEF is isoceles, you can set the equations
x+7 and 2x+5 equal to each other
x+7=2x+5, now solve for x
-x=-2,
x=2, now plug in for each side
DE,EF=9
DF=3(2)-1=5
11 - 19m = -16m -16 subtract 11 on both sides, and you get -19m = -16m -27. Then you add 16m to both sides, so its -3 = -27, and once you divide both sides by -3, it equals m = 9 :)
The answer is 126 ok i hope i helped