2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
-2x=-8
x=-8/-2
x=4
2) we evalute x²-1
x²-1=4²-1=16-1=15
Answer: 15
Answer:
Sharon would have to run 24 ft.
Step-by-step explanation:
Begin by finding the perimeter by dividing 3,280 by 40.
Then eliminate D and E because they are larger than the total perimeter, and then plug in the remaining values into the perimeter and then see which also gives you the area.
This is how you get the answer 24 ft.
Hope this helped :D
Answer:
1/2 km or 0.5 km
Step-by-step explanation:
In the attached file
Answer:
Step-by-step explanation:
Using the formula for the ratio of period of damped motion to the period of undamped motion
![\frac{140}{100} = (1 - \frac{γ^{2} }{4} ) ^{-1/2}](https://tex.z-dn.net/?f=%5Cfrac%7B140%7D%7B100%7D%20%3D%20%281%20-%20%5Cfrac%7B%CE%B3%5E%7B2%7D%20%7D%7B4%7D%20%29%20%5E%7B-1%2F2%7D)
![\frac{7}{5} = (1 - \frac{γ^{2} }{4} ) ^{-1/2}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B5%7D%20%3D%20%281%20-%20%5Cfrac%7B%CE%B3%5E%7B2%7D%20%7D%7B4%7D%20%29%20%5E%7B-1%2F2%7D)
Solving for damping coefficient γ,
![(\frac{5}{7})^{2} = 1 - \frac{γ^{2} }{4}](https://tex.z-dn.net/?f=%28%5Cfrac%7B5%7D%7B7%7D%29%5E%7B2%7D%20%20%3D%201%20-%20%5Cfrac%7B%CE%B3%5E%7B2%7D%20%7D%7B4%7D)
![γ^{2} = (1 - 0.5102) *4 \\](https://tex.z-dn.net/?f=%CE%B3%5E%7B2%7D%20%20%3D%20%281%20-%200.5102%29%20%2A4%20%5C%5C)
γ =
= 1.4
2/9 Is your simplified fraction! Have a great day!
:)