The answer is C), 834, 834.19, 834.2, 834.29
I know this is late, but I hope it was helpful!
For number one you should get 6√3
Honestly I don't know congruent so congrats I can't answer sorry
Answer:
False solution; [1⅐, -3 3⁄7]
Step-by-step explanation:
{x - 2y = 8
{4x - y = 8
-¼[4x - y = 8]
{x - 2y = 8
{-x + ¼y = -2 >> New Equation
____________
-1¾y = 6
y = -3 3⁄7 [Plug this back into both equations to get the x-coordinate of 1⅐]; 1⅐ = x
I am joyous to assist you anytime.