Do the brackets first as it says in BIDMAS
Plug in x=1 and y=2 into the inequality:-
2x + 9y = 2 + 18 = 20
20 is not < 20
so it is not a solution
Answer:
yes, it is a right triangle.
Step-by-step explanation:
trust
2008
end year using 4 digits
5x + 3y = 7> (4) 5x + (4) 3y = (4) 7
4x + 5y = 3> (-5) 4x + (-5) 5y = (-5) 3
20y + 12y = 28
-20x -25y = -15
(X's cross out) 12y - 25y = 28 -15
-13y = 13
Y = -1
(Plug in for y) 5x + 3(-1) = 7
5x -3 =7 (add 3 to 7)
5x = 10 (divide by 5)
X= 2
Ordered Pair= (2, -1)
