Answer:
(6, 12) 
Step-by-step explanation:
{ 3x - y = 6 
{ x - 2y = -18
by using elimination:
6x -2y=12
 x - 2y= -18
________-
5x = 30
x = 6
y = 18-6 = 12
the solutions = {(6, 12)}
 
        
             
        
        
        
Answer:
v = 80 mph
Step-by-step explanation:
Given that,
The distance from Wakefield to London is 180 miles.
The train travels this distance in 2 hours 15 minutes.
We need to find the average speed of the train. The average speed of the train is equal to the total distance covered divided by the time taken.

So, the required average speed of the train is 80 mph.
 
        
             
        
        
        
9514 1404 393
Answer:
   (c)  BK = 65
Step-by-step explanation:
Corresponding sides are proportional in similar triangles, so ...
   ZT/ZQ = KF/KB
   27/(2x +7) = 45/(4x+1)
   27(4x+1) = 45(2x +7) . . . cross-multiply
   3(4x +1) = 5(2x +7) . . . . divide by 9
   12x +3 = 10x +35 . . . . . eliminate parentheses
   2x = 32 . . . . . . . . . . . . . subtract 10x+3
   x = 16 . . . . . divide by 2
Then the length of BK is ...
   BK = 4x+1 = 4·16 +1
   BK = 65
 
        
             
        
        
        
Answer:
Because
Step-by-step explanation:
It goes into 1,3,5 and 15
A prime number only goes into 1 and itself
 
        
                    
             
        
        
        
To find the perimeter you would need to add 35+35+65+65=200. If the perimeter is 200, and he circles around it 4 times, 200*4=800, which is the answer. 
 Answer: The total amount of yards that Chris dribbles the ball is 800 yards.