two pillars support the archway entrance of a castle. h=-0.025d^2+d, where h represents height. d represents the horizontal distance in feet. How far apart are the pillars?

Question

valpey · Answer

Do you see that when d =0, h also =0?

anonymous · Answer

ok

anonymous · Answer

set h to zero and d should be coordinant   of half way point of 2 arches.

anonymous · Answer

*pillars not arches i mean

valpey · Answer

No, h is zero at d=0 and at another point where the far arch is (not the halfway point). But solving for the other h=0 is the key.

valpey · Answer

Maybe @timo86m meant solving for h'=0 gives the halfway point.

anonymous · Answer

you can do that also if she has taken calc 1