Pythagorean Theorem: Question 5 Use the Pythagorean Theorem to decide if the triangle
below is a right triangle.
13 mm
84 mm
85 mm
Select one
O No, because 13° +81° +852
Yes, because 13° +852 - 842
O
Yes, because 13° +842 - 852
O
No, because 13° +852 852

idk

step-by-step explanation:

use that smart brain

step-by-step explanation:

hjkj

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