It is 9
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Answer:

Step-by-step explanation:
If A = (-3,-1) and B = (4,4), the slope of AB is

Two perpendicular lines have slopes that have product of -1:

The equation of the line BC with slope -1.4 and passing through the point B(4,4) is

Answer:
angle 2 =90 because it is a right angle
Answer:
0.625
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
4x3=12 tins of white paint
12+4=16 total tins