Answer:
It is 6ft
Step-by-step explanation:
The formula is 
A= 1/2bh so now you would substitute
39= 1/2(13)h
78= 13h
6=h
 
 
        
             
        
        
        
Answer:

Step-by-step explanation:

In order to simplify the above expressions we make sure that we get same powers of 10 for both the terms.
So, we multiply and divide the first term with 10
Dividing first term by 10.

Now multiplying it by 10.

Evaluating the new expressions.

Taking  common factor out.
 common factor out.


 
        
             
        
        
        
<h2>
Answer:</h2>
The answer is 25 minutes
<h2>
Step-by-step explanation:</h2>
As we see the median time given in minutes before the installation was 53 minutes and after the installation it became 28 so by taking the difference which is 53 - 28 gives us 25 minutes.
 
        
             
        
        
        
Answer:
3,750 cars. 
Step-by-step explanation:
We are given that the equation: 

Models the relationsip between <em>y</em>, the number of unfilled seats in the stadium, and <em>x</em>, the number of cars in the parking lot. 
We want to determine the number of cars in the parking lot when there are no unfilled seats in the stadium. 
When there are no unfilled seats in the stadium, <em>y</em> = 0. Thus: 

Solve for <em>x</em>. Subtract 9000 from both sides: 

Divide both sides by -2.4: 

So, there will be 3,750 cars in the parking lot when there are no unfilled seats in the stadium. 
 
        
             
        
        
        
Answer:
$35
Step-by-step explanation:
Rounding to the nearest dollar which would be 4 so in that case you would use the 5 in .57 and because 5 is a large number it would make the 4 into a five thus making it $35. Hope this helped :)