Answer:

Step-by-step explanation:
I)
The Midpoint M of the line segment AB is found using the Midpoint formula:

ii)
the slope of the line through A and B is found by the slope formula:

iii)
the product of the slopes of 2 perpendicular lines is -1, so the slope of the line perpendicular to the line through A and B is -1/(-1)=1
iv)
the equation of the line with slope 1, which contains point M(3, 9) is found by the slope point form equation of a line:
y-9=1(x-3)
y-9=x-3
y=x+6
Answer: y=x+6
$105 because 35+45+25=105.
I hope this helped you!
:D
Answer:
35
Step-by-step explanation:
sin is opposite over hypotenuse
sin x = 8/14