A(–2, 4), B(4, 4), C(4, –2), D(–2, –2)
-> select some diagonal: AC
midpoint is at A+(1/2)*AC
-> calculate vector AC:
AC=(4-(-2),-2-4)=(6,-6)
-> calculate half length of AC:
(1/2)*AC=(3,-3)
A+(1/2)*AC=
(-2,4)+(3,-3)=(1,1) which is the midpoint
so the first option is correct
The slope of a line parallel to this line is -4/7
And the slope of a line perpendicular is 3/4
Answer:
Fell
3.4
Step-by-step explanation:
not really much to it
(1) let there be x book and let the total cost be y dollars.
y=19.25x+40
y=16x+69.25
(2) 19.25x+40=16x+69.25
3.25x=29.25
x=9
9 silver book, 9 gold book.
(3) y=19.25x+40=19.25*9+40=213.25 dollars
both companies' total cost are 213.25 dollars.
Answer:
If they can make it from 3 materials and 2 fasteners, you can turn it into some kind of chart
cotton-button; cotton-snaps
satin-button; satin-snaps
silk-button; silk snaps.
Using that, which uses the 2 kinds of fasteners and each material, you can conclude that it is----
6 combinations :)
Step-by-step explanation:
hope this helps, if im wrong critique me.