In your equation: a+(-4)=-13
you then add four to each side,
so a= negative 13 plus 4
so a= -9
The answer is 1494.569444
The base of the triangle is 6 - 2 = 4 units
The height is 6 - 1 = 5 units
Area = 1/2 x 4 x 5 = 10 square units
Answer:
c
Step-by-step explanation: