The unit rate of speed is 52.5 miles per hour
<em><u>Solution:</u></em>
Given that On a trip to visit relatives you drive 1,115.625 miles over the course of 21  hours and 15 minutes
We know that, 1 hour = 60 minutes
21  hours and 15 minutes = 21 hours + (15/60) hours = 21 + 0.25 = 21.25 hours
So they drive 1115.625 miles in 21.25 hours
To find the unit rate of speed of your vehicle in miles per hour, divide the total miles by time taken
unit rate of speed means miles driven in 1 hour

So the unit rate of speed is 52.5 miles per hour
 
        
             
        
        
        
Answer:
45°
Step-by-step explanation:
I think you meant m<ACB, and from what I see here, I took half of 90°, which is 45°.
 
        
             
        
        
        
 The volume of the cone is approximately 8.2 inches cubed
        
             
        
        
        
Answer:
Step-by-step explanation:
For problem #1 identify the coordinates of the point of intersection of the two lines.  This point is (4, 2), and this is the solution to #1.
In problem #2 the lines never cross, and thus we conclude that there is no solution.