Someone help please :(

c = √746

Step-by-step explanation:

You need to use Pythagorean Theorem (a² + b² = c²) in order to solve for the hypotenuse.

25² + 11² = c²

625 + 121 = c²

746 = c²

√746 = c

true? is that what you're asking or do you mean something else?

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18