It’s A because if you turn the shape they are the same
Answer:
p=0.6
Step-by-step explanation:
Find the concavity changes of f(x).
Give the x-coordinates.
So, the answer to the multiple choice question is -1 and 5 since those points are where f''(x) changes sign.
Note: You can tell that you're supposed to find the concavity changes of f(x) and not f''(x) because from the graph it's obvious that the concavity of f"(x) doesn't change.
Answer:
The eastbound train travels at 92 mph and the westbound train travels at 96 mph.
Step-by-step explanation:
We know that Velocity = distance / time
If the eastbound train travels at x miles per hour, the westbound train travels at x + 4 mph.
After 3.5 hours, they are 658 miles apart. If we solve for distance the formula given above we have: Distance = velocity x time. We have that the total distance between both trains is 658 miles.
Substituting the values of the problem and solving for x we have
![658 = 3.5x+3.5(x+4)\\658=3.5x+3.5x+14\\644=7x\\92=x](https://tex.z-dn.net/?f=658%20%3D%203.5x%2B3.5%28x%2B4%29%5C%5C658%3D3.5x%2B3.5x%2B14%5C%5C644%3D7x%5C%5C92%3Dx)
Thus, the eastbound train travels at 92 mph and the westbound train travels at 96 mph.