Y = 4 x - 9
y = - 3 x - 5
I hope this will help you
i looked this up and this is what i got
1) 
2) 
is a right angle (perpendicular lines form right angles)
3) 
is a right triangle (definition of a right triangle)
4) 
and 
are complementary (the acute angles of a right triangle are complementary)
Answer:
In the picture above.
Step-by-step explanation:
Good luck.
Answer:
=14.69km²
Step-by-step explanation:
We can use the Hero's formula to calculate the area
A= √(s(s-a)(s-b)(s-c))
s is obtained by adding the lengths of the three sides of the triangle and then dividing by 2, a, b and c are the ides of the triangle.
S=(5+6+7)/2
=9
A=√(9(9-6)(9-5)(9-7))
=√(9×3×4×2)
=√216
=14.69km²
They have different angle's degrees acute are degrees lesser than 90°, and right angle are 90° only, and obtuse angles are angle degrees more than 90° degrees
