Y-y1=m(x-x1)
slope is m
given
y-3=-2(x-4)
slope=-2
perpendicular lines have slopesthat multiply to -1
-2 times ?=-1
divide by -2
?=1/2
slope is 1/2
He can make 15 chess boards.
All you need to do is multiply 3 by 5.
Answer:1 11/20 (I think)
Step-by-step explanation: First subtracting 3 - 2 gets you 1. so we keep that aside and do fractions. first, what do 4 and 5 have in common? They both can be turned to 20. 3/4 can be multiplied to 20 4x5(20) so we do 3x5=15 now you have 15/20. Hope this makes sense. now we do 1/5 to ?/20 5x4=20 1x4=4 so 15/20-4/20=11/20 11/20+1= 1 11/20
-Sorry if its too complicated
(undo ur answer if u trusted me before bc I messed up)
(its good now)
