Dis the midpoint of ec and f is the midpoint of ea ac=14 what is the value of fd? a) 14 b) 7 c) 4 d) 10

Answer

Option B) 7 is the correct answer  

FD = 7cm

Explanation

Here triangle AEC. D is the midpoint of EC and F is the midpoint of EA

So D and F be the midpoint of triangle AEC.  

FD be the midpoint  joining line.

We know that if any triangle, line joining the midpoint  of two sides is the half of the third side.

Here the third side is 14cm, then FD = 14/2 = 7cm

So option B) is the correct answer.

if you was gonna solve for a, a is a   < -12

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c