Answer:
2a-6
Step-by-step explanation:
2(a-3)
2*a-(2*3)
2a-6
Answer:
21r +3
Step-by-step explanation:
3(7r + 1) =
Distribute
3*7r +3*1
21r +3
Small, because 1 divided by 8 = 0.125, and 3 divided by 4 = .75 Hope this helps!
Step-by-step explanation:
a) gradient= y2-y1/x2-x1
gradient of AB:
gradient=-4-1/2-3
=-5/-1
=5
gradient of BC:
=-5+4/7-2
=-1/5
b) as the priduct of both gradient is -1 ,both lines are perpendicular.
c) as we have seen lines are perpendicular so it is a right angled triangle.
The answer is 0.15290519877
