SOMEONE HELP PLEASE!!What are the coordinates of each point after quadrilateral ABCD is rotated 270° about the origin? Drag numbers to complet Numbers may be used once, more than once, or not at all.
N Ау
6
M M
4
B
С
2
L
-6
E
K A
-2 Н
DX
6
-4
2.
4
-2
F
G
-4
-6
-1
-2
1
2
3
-3
4
5
-5

ans789

step-by-step explanation:

a

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

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