Answer:
{x,y} = {-2,2}
Step-by-step explanation:
Solve equation [2] for the variable y
7y = 7x + 28
y = x + 4
Plug this in for variable y in equation [1]
-8x + 4•(x +4) = 24
-4x = 8
Solve equation [1] for the variable x
4x = - 8
x = - 2
By now we know this much :
x = -2
y = x+4
Use the x value to solve for y
y = (-2)+4 = 2
Solution :
{x,y} = {-2,2}
and this intersects at only one point so your answer is A
Step-by-step explanation:
step 1. The square matrices are C and D.
step 2. If you add up the top rows you get 2, 8, -4 .
step 3. The answer is B.
Answer:
idk................ 40?
Step-by-step explanation:
The cost of one ticket will be £8.20
<em><u>Explanation</u></em>
Suppose, the cost of one ticket is 
As the offer says "buy 3 tickets and get a ticket free" , it means <u>they actually need to pay for 3 tickets</u>.
So, the total cost of 3 tickets 
Each of four friends pay £6.15 , so the <u>total amount they pay</u> 
Thus, the equation will be .....
So, the cost of one ticket will be £8.20
