Slope of AB=(2-3)/(1+1)=-1/2; AC=(-1-3)/(-3+1)=-4/-2=2; BC=(-1-2)/(-3-1)=-3/-4=3/4.
The product of two sides that are perpendicular is -1. Slopes of AB and AC are perpendicular so angle A is a right angle. ABC is a right-angled triangle.
Answer: 385 cm
Step-by-step explanation: V= l*w*h
V= 7*5*11
= 385
Answer:
The first statement: "Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2."
