Answer:
a. Set up a ratio.
b. Divide the numerator by the denominator to get the mass (in g) of 1 mL.
c. The density is 0.75 g/ mL
The midpoint of a line segment is the average of the endpoint's coordinates, mathematically:
mp=((x1+x2)/2, (y1+y2)/2)
In this case:
(-4,6)=((8+x)/2, (-2+y)/2)
(-8,12)=((8+x),(y-2))
(-16, 14)=(x,y)
The point-slope form:
We have the points (-5, -2) and (1, 2). Substitute:
Add E on AB where ED is perpendicular to AB , since the distance between D and AB is 5 in , so ED is 5 in (because the distance between a point and a line is the length of the perpendicular line drawn from the point to the line)
now we have a right angled triangle AED at E , sin(DAE) = DE/AD = 5/10 =1/2
so angle DAE is 30 degrees and since angle CAB is 60 degrees
therefore AD is angle bisector of angle A