f(p) where p is the price in thousands. f(250) means the average number of days before being sold for $250,000. Lets take a look at the answers and see which fits the best:
1. The house sold for $250,000. (This is what the 250 stands for, but we need to find what f(250) means and not just 250)
2. The house stayed on the market for an average of 250 days before being sold. (Nope, not even close)
3. This is the average number of days the house stayed on the market before being sold for $250,000. (Yes! This seems right, f(250) is the average number of days before being sold for $250,000)
4. The house sold on the market for $250,000 and stayed on the market for an average of 250 days before being sold. (Nope, we are not told anywhere that it takes 250 days to be sold)
This means that our answer has to be 3) This is the average number of days the house stayed on the market before being sold for $250,000.
I hope I've helped! :)
Answer:
(dy/dt) = - 0.45 m/s (the minus sign indicates that the height of the shadow decreases as the man moves towards the wall).
Step-by-step explanation:
An image of the problem is presented in the attached file to this solution. The image shows the exact moment when the 2m tall man is 4m away from the wall.
First of, when the man is 4m away from the wall, he is 8m away from the spotlight, that is, x = 8m
Using the concept of similar triangles, we can obtain the value of y at this point.
(x/2) = [(x+4)/y]
x = 8
(8/2) = (12/y)
y = 3m when x = 8m
From the image,
But generally, for x and y at any point,
(x/2) = (12/y)
xy = 24
Differentiating with respect to t
(d/dt)(xy) = (d/dt)12
y (dx/dt) + x (dy/dt) = 0
x (dy/dt) = - y (dx/dt)
At x = 8m, y = 3m, (dx/dt) = 1.2 m/s
8 (dy/dt) = - 3 (1.2)
(dy/dt) = - 3.6/8 = - 0.45 m/s
The minus sign indicates that the height of the shadow decreases as the man moves towards the wall.
Answer:
The numbers are 12 and −29
Step-by-step explanation:
Answer:
5 units
Step-by-step explanation:
Even if there is a transformation, it is asking for the length.
Therefore the length of WZ is 5 units
