Answer:
Step-by-step explanation:
All square angles are 90° exactly 90° so we can use that to your advantage. since "7x + 3" is one of the square's angles, that means 7x + 3 must equal 90°. (7x + 3)° = 90°.
7x + 3 = 90
7x = 90 - 3
7x = 87
7x/7 = 87/7
x = 87/7
Marks As Brain List please
Step-by-step explanation:
Answer:
D.(-1,-5) and (5,7)
Step-by-step explanation:
I used a graphing tool to graph the two equations together. When graphed, the equations intercept (5,7) and (-1,-5). Therefore, they are the solutions to the system.
Option D should be the correct answer.