Is this the full question?
Answer:
-6/7
Step-by-step explanation:
The slope of the line perpendicular to DE is the negative reciprocal of the slope of DE. The slope of DE is ...
(change in y)/(change in x) = (y2 -y1)/(x2 -x1) = (-3-4)/(1-7) = -7/-6 = 7/6
The inverse of that is 6/7, and the opposite of that inverse is -6/7.
The slope of the line perpendicular to DE is -6/7.
Answer:0.012345
Step-by-step explanation: km=mm/1000000 so 12345/1000000=0.012345mm
F(a)=-2a^2 - 5a^4
if a=-3
f(-3)=-2(-3)^2 - 5(-3)^4
=(-2*9) - (5*81)
=-18 - 405
=423
