-7 because when it’s +(-) it’s always the same as the outside sign
-4 same thing explained above
-4
hope this helps
A is not a line of symmetry
Answer:
Step-by-step explanation:
x-y=7
-3x+9y=-39
Divide the second equation by 3
-x +3y = -13
Add this to the first equation
x-y=7
-x +3y = -13
----------------------
0x +2y = -6
Divide by 2
2y/2 = -6/2
y = -3
Now find x
x-y = 7
x -(-3) = 7
x+3 = 7
Subtract 3 from each side
x = 4
(4,-3)
Or by substitution
x-y=7
solve for x
x = 7+y
-3x+9y=-39
Substitute y+7 in for x
-3(7+y) +9y = -39
Distribute
-21 -3y +9y = -39
Combine like terms
-21 +6y = -39
Add 21 to each side
6y = -18
hm its just that i dont know so maybe try do smth else
<span>52√+23√ = 4.79
Approx 5.1 is the answer.
Hope that helps. -UF aka Nadia
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