3
In AABC, centroid D is on median AM. AD=x+4 and DM = 2x-4. Find AM.

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s

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

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: