Answer:
A" (-4, -7); B" (-5, -4); C" (-4, -3); D" (-3, -4)
Step-by-step explanation:
It says in the problem that polygon ABCD is translated (x - 2, y + 3), right? So we translate each point by subtracting 2 from the x-coordinates of A, B, C and D to get A', B', C' and D'. From A', B', C' and D', we rotate by 90 degrees by using the format (-y, x). The x-coordinates of A', B', C' and D' remain constant but become the new y-coordinates and the y-coordinates of A', B', C' and D' become negative and the x-coordinates for A", B", C" and D".
Answer:
2.56
Step-by-step explanation:
14.7 - 1.9 = 12.8
12.8/5 (sides) =
n = 2.56
check:
2.56 * 5 = 12.8
12.8 + 1.9 = 14.7
Answer:
(-3,2)
Step-by-step explanation:
1) -2x+y=8
you need to leave the Y alone on one side. Then, the term -2x goes to the other side with its opposite sign which is +.
y=8+2x
2) y=2x/(5-8)
3) 8+2x=2x/(5-8)
now, you need the x value. for that, you need to leave x alone on one side.
8+2x=2x/(-3)
8+2x=-(2/3)x
8=-(2/3)x-2x
8=-(8/3)x
8/-(8/3)=x
-3=x
4) you now have the x value. you need the y value. for that, replace the x in one of the given equations. let´s use the 1st equation.
-2x+y=8
y=8+2x
y=8+2*(-3)
y=2
result:
x= -3
y=2
