Options :
A) the average of the 30 stocks in the dow jones increased.
B) every stock in the dow jones decreased 
C) The NASDAQ increased.
D) The S&P increased.
Answer: B) every stock in the dow jones decreased 
Explanation: The rate of change is used to measure or keep track of percentage change in stock prices over time. The change might be a positive or negative change. The change of - 2.1% indicated above exemplifies a negative change and thus a decrease or fall in stock prices over the measured time period. It indicates a downward trend and thus a decline in the stocks of dow jones. 
 
        
             
        
        
        
Answer: 4969 meters
Explanation: Here's what you do: 9,656 - 4,687 = 4969
 
        
             
        
        
        
Answer:

And we can solve for y and we got:

And using condition (1) we can solve for x and we got:

So then the minimum cost for this case would be:

Explanation:
For this case the graph attached illustrate the problem for this case
We know that the total area is 60000, so then we have:

If we solve for x we got:
 (1)
  (1)
Now we can define the cost function like this:


We can use the condition (1) and if we replace in the cost function we have:

Since we need to minimize the cost, we can derivate the function in terms of y and we got:

And we can solve for y and we got:

And using condition (1) we can solve for x and we got:

So then the minimum cost for this case would be:

 
        
             
        
        
        
Answer: Hydroelectricity is a form of hydropower and is the most widely used form of renewable energy throughout the world. ... Hydro electricity extracted from water depends not only on the volume but on the difference in height between the source and the water's outflow.
Hope this helps...... Stay safe and have a Merry Christmas!!!!!!!! :D
Explanation: